Mathematical operators and symbols in Unicode

The Unicode Standard encodes almost all standard characters used in mathematics.^[1] Unicode Technical Report #25 provides comprehensive information about the character repertoire, their properties, and guidelines for implementation.^[1] Mathematical operators and symbols are in multiple Unicode blocks. Some of these blocks are dedicated to, or primarily contain, mathematical characters while others are a mix of mathematical and non-mathematical characters. This article covers all Unicode characters with a derived property of "Math".^[2]^[3]

This article contains special characters. Without proper rendering support, you may see question marks, boxes, or other symbols.

Mathematical Operators block

The Mathematical Operators block (U+2200–U+22FF) contains characters for mathematical, logical, and set notation.

Mathematical Operators^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+220x	∀	∁	∂	∃	∄	∅	∆	∇	∈	∉	∊	∋	∌	∍	∎	∏
U+221x	∐	∑	−	∓	∔	∕	∖	∗	∘	∙	√	∛	∜	∝	∞	∟
U+222x	∠	∡	∢	∣	∤	∥	∦	∧	∨	∩	∪	∫	∬	∭	∮	∯
U+223x	∰	∱	∲	∳	∴	∵	∶	∷	∸	∹	∺	∻	∼	∽	∾	∿
U+224x	≀	≁	≂	≃	≄	≅	≆	≇	≈	≉	≊	≋	≌	≍	≎	≏
U+225x	≐	≑	≒	≓	≔	≕	≖	≗	≘	≙	≚	≛	≜	≝	≞	≟
U+226x	≠	≡	≢	≣	≤	≥	≦	≧	≨	≩	≪	≫	≬	≭	≮	≯
U+227x	≰	≱	≲	≳	≴	≵	≶	≷	≸	≹	≺	≻	≼	≽	≾	≿
U+228x	⊀	⊁	⊂	⊃	⊄	⊅	⊆	⊇	⊈	⊉	⊊	⊋	⊌	⊍	⊎	⊏
U+229x	⊐	⊑	⊒	⊓	⊔	⊕	⊖	⊗	⊘	⊙	⊚	⊛	⊜	⊝	⊞	⊟
U+22Ax	⊠	⊡	⊢	⊣	⊤	⊥	⊦	⊧	⊨	⊩	⊪	⊫	⊬	⊭	⊮	⊯
U+22Bx	⊰	⊱	⊲	⊳	⊴	⊵	⊶	⊷	⊸	⊹	⊺	⊻	⊼	⊽	⊾	⊿
U+22Cx	⋀	⋁	⋂	⋃	⋄	⋅	⋆	⋇	⋈	⋉	⋊	⋋	⋌	⋍	⋎	⋏
U+22Dx	⋐	⋑	⋒	⋓	⋔	⋕	⋖	⋗	⋘	⋙	⋚	⋛	⋜	⋝	⋞	⋟
U+22Ex	⋠	⋡	⋢	⋣	⋤	⋥	⋦	⋧	⋨	⋩	⋪	⋫	⋬	⋭	⋮	⋯
U+22Fx	⋰	⋱	⋲	⋳	⋴	⋵	⋶	⋷	⋸	⋹	⋺	⋻	⋼	⋽	⋾	⋿
Notes 1.^ As of Unicode version 16.0

Supplemental Mathematical Operators block

The Supplemental Mathematical Operators block (U+2A00–U+2AFF) contains various mathematical symbols, including N-ary operators, summations and integrals, intersections and unions, logical and relational operators, and subset/superset relations.

Supplemental Mathematical Operators^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+2A0x	⨀	⨁	⨂	⨃	⨄	⨅	⨆	⨇	⨈	⨉	⨊	⨋	⨌	⨍	⨎	⨏
U+2A1x	⨐	⨑	⨒	⨓	⨔	⨕	⨖	⨗	⨘	⨙	⨚	⨛	⨜	⨝	⨞	⨟
U+2A2x	⨠	⨡	⨢	⨣	⨤	⨥	⨦	⨧	⨨	⨩	⨪	⨫	⨬	⨭	⨮	⨯
U+2A3x	⨰	⨱	⨲	⨳	⨴	⨵	⨶	⨷	⨸	⨹	⨺	⨻	⨼	⨽	⨾	⨿
U+2A4x	⩀	⩁	⩂	⩃	⩄	⩅	⩆	⩇	⩈	⩉	⩊	⩋	⩌	⩍	⩎	⩏
U+2A5x	⩐	⩑	⩒	⩓	⩔	⩕	⩖	⩗	⩘	⩙	⩚	⩛	⩜	⩝	⩞	⩟
U+2A6x	⩠	⩡	⩢	⩣	⩤	⩥	⩦	⩧	⩨	⩩	⩪	⩫	⩬	⩭	⩮	⩯
U+2A7x	⩰	⩱	⩲	⩳	⩴	⩵	⩶	⩷	⩸	⩹	⩺	⩻	⩼	⩽	⩾	⩿
U+2A8x	⪀	⪁	⪂	⪃	⪄	⪅	⪆	⪇	⪈	⪉	⪊	⪋	⪌	⪍	⪎	⪏
U+2A9x	⪐	⪑	⪒	⪓	⪔	⪕	⪖	⪗	⪘	⪙	⪚	⪛	⪜	⪝	⪞	⪟
U+2AAx	⪠	⪡	⪢	⪣	⪤	⪥	⪦	⪧	⪨	⪩	⪪	⪫	⪬	⪭	⪮	⪯
U+2ABx	⪰	⪱	⪲	⪳	⪴	⪵	⪶	⪷	⪸	⪹	⪺	⪻	⪼	⪽	⪾	⪿
U+2ACx	⫀	⫁	⫂	⫃	⫄	⫅	⫆	⫇	⫈	⫉	⫊	⫋	⫌	⫍	⫎	⫏
U+2ADx	⫐	⫑	⫒	⫓	⫔	⫕	⫖	⫗	⫘	⫙	⫚	⫛	⫝̸	⫝	⫞	⫟
U+2AEx	⫠	⫡	⫢	⫣	⫤	⫥	⫦	⫧	⫨	⫩	⫪	⫫	⫬	⫭	⫮	⫯
U+2AFx	⫰	⫱	⫲	⫳	⫴	⫵	⫶	⫷	⫸	⫹	⫺	⫻	⫼	⫽	⫾	⫿
Notes 1.^ As of Unicode version 16.0

Mathematical Alphanumeric Symbols block

The Mathematical Alphanumeric Symbols block (U+1D400–U+1D7FF) contains Latin and Greek letters and decimal digits that enable mathematicians to denote different notions with different letter styles. The reserved code points (the "holes") in the alphabetic ranges up to U+1D551 duplicate characters in the Letterlike Symbols block. In order, these are ℎ / ℬ ℰ ℱ ℋ ℐ ℒ ℳ ℛ / ℯ ℊ ℴ / ℭ ℌ ℑ ℜ ℨ / ℂ ℍ ℕ ℙ ℚ ℝ ℤ.

Mathematical Alphanumeric Symbols^[1]^[2] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+1D40x	𝐀	𝐁	𝐂	𝐃	𝐄	𝐅	𝐆	𝐇	𝐈	𝐉	𝐊	𝐋	𝐌	𝐍	𝐎	𝐏
U+1D41x	𝐐	𝐑	𝐒	𝐓	𝐔	𝐕	𝐖	𝐗	𝐘	𝐙	𝐚	𝐛	𝐜	𝐝	𝐞	𝐟
U+1D42x	𝐠	𝐡	𝐢	𝐣	𝐤	𝐥	𝐦	𝐧	𝐨	𝐩	𝐪	𝐫	𝐬	𝐭	𝐮	𝐯
U+1D43x	𝐰	𝐱	𝐲	𝐳	𝐴	𝐵	𝐶	𝐷	𝐸	𝐹	𝐺	𝐻	𝐼	𝐽	𝐾	𝐿
U+1D44x	𝑀	𝑁	𝑂	𝑃	𝑄	𝑅	𝑆	𝑇	𝑈	𝑉	𝑊	𝑋	𝑌	𝑍	𝑎	𝑏
U+1D45x	𝑐	𝑑	𝑒	𝑓	𝑔		𝑖	𝑗	𝑘	𝑙	𝑚	𝑛	𝑜	𝑝	𝑞	𝑟
U+1D46x	𝑠	𝑡	𝑢	𝑣	𝑤	𝑥	𝑦	𝑧	𝑨	𝑩	𝑪	𝑫	𝑬	𝑭	𝑮	𝑯
U+1D47x	𝑰	𝑱	𝑲	𝑳	𝑴	𝑵	𝑶	𝑷	𝑸	𝑹	𝑺	𝑻	𝑼	𝑽	𝑾	𝑿
U+1D48x	𝒀	𝒁	𝒂	𝒃	𝒄	𝒅	𝒆	𝒇	𝒈	𝒉	𝒊	𝒋	𝒌	𝒍	𝒎	𝒏
U+1D49x	𝒐	𝒑	𝒒	𝒓	𝒔	𝒕	𝒖	𝒗	𝒘	𝒙	𝒚	𝒛	𝒜		𝒞	𝒟
U+1D4Ax			𝒢			𝒥	𝒦			𝒩	𝒪	𝒫	𝒬		𝒮	𝒯
U+1D4Bx	𝒰	𝒱	𝒲	𝒳	𝒴	𝒵	𝒶	𝒷	𝒸	𝒹		𝒻		𝒽	𝒾	𝒿
U+1D4Cx	𝓀	𝓁	𝓂	𝓃		𝓅	𝓆	𝓇	𝓈	𝓉	𝓊	𝓋	𝓌	𝓍	𝓎	𝓏
U+1D4Dx	𝓐	𝓑	𝓒	𝓓	𝓔	𝓕	𝓖	𝓗	𝓘	𝓙	𝓚	𝓛	𝓜	𝓝	𝓞	𝓟
U+1D4Ex	𝓠	𝓡	𝓢	𝓣	𝓤	𝓥	𝓦	𝓧	𝓨	𝓩	𝓪	𝓫	𝓬	𝓭	𝓮	𝓯
U+1D4Fx	𝓰	𝓱	𝓲	𝓳	𝓴	𝓵	𝓶	𝓷	𝓸	𝓹	𝓺	𝓻	𝓼	𝓽	𝓾	𝓿
U+1D50x	𝔀	𝔁	𝔂	𝔃	𝔄	𝔅		𝔇	𝔈	𝔉	𝔊			𝔍	𝔎	𝔏
U+1D51x	𝔐	𝔑	𝔒	𝔓	𝔔		𝔖	𝔗	𝔘	𝔙	𝔚	𝔛	𝔜		𝔞	𝔟
U+1D52x	𝔠	𝔡	𝔢	𝔣	𝔤	𝔥	𝔦	𝔧	𝔨	𝔩	𝔪	𝔫	𝔬	𝔭	𝔮	𝔯
U+1D53x	𝔰	𝔱	𝔲	𝔳	𝔴	𝔵	𝔶	𝔷	𝔸	𝔹		𝔻	𝔼	𝔽	𝔾
U+1D54x	𝕀	𝕁	𝕂	𝕃	𝕄		𝕆				𝕊	𝕋	𝕌	𝕍	𝕎	𝕏
U+1D55x	𝕐		𝕒	𝕓	𝕔	𝕕	𝕖	𝕗	𝕘	𝕙	𝕚	𝕛	𝕜	𝕝	𝕞	𝕟
U+1D56x	𝕠	𝕡	𝕢	𝕣	𝕤	𝕥	𝕦	𝕧	𝕨	𝕩	𝕪	𝕫	𝕬	𝕭	𝕮	𝕯
U+1D57x	𝕰	𝕱	𝕲	𝕳	𝕴	𝕵	𝕶	𝕷	𝕸	𝕹	𝕺	𝕻	𝕼	𝕽	𝕾	𝕿
U+1D58x	𝖀	𝖁	𝖂	𝖃	𝖄	𝖅	𝖆	𝖇	𝖈	𝖉	𝖊	𝖋	𝖌	𝖍	𝖎	𝖏
U+1D59x	𝖐	𝖑	𝖒	𝖓	𝖔	𝖕	𝖖	𝖗	𝖘	𝖙	𝖚	𝖛	𝖜	𝖝	𝖞	𝖟
U+1D5Ax	𝖠	𝖡	𝖢	𝖣	𝖤	𝖥	𝖦	𝖧	𝖨	𝖩	𝖪	𝖫	𝖬	𝖭	𝖮	𝖯
U+1D5Bx	𝖰	𝖱	𝖲	𝖳	𝖴	𝖵	𝖶	𝖷	𝖸	𝖹	𝖺	𝖻	𝖼	𝖽	𝖾	𝖿
U+1D5Cx	𝗀	𝗁	𝗂	𝗃	𝗄	𝗅	𝗆	𝗇	𝗈	𝗉	𝗊	𝗋	𝗌	𝗍	𝗎	𝗏
U+1D5Dx	𝗐	𝗑	𝗒	𝗓	𝗔	𝗕	𝗖	𝗗	𝗘	𝗙	𝗚	𝗛	𝗜	𝗝	𝗞	𝗟
U+1D5Ex	𝗠	𝗡	𝗢	𝗣	𝗤	𝗥	𝗦	𝗧	𝗨	𝗩	𝗪	𝗫	𝗬	𝗭	𝗮	𝗯
U+1D5Fx	𝗰	𝗱	𝗲	𝗳	𝗴	𝗵	𝗶	𝗷	𝗸	𝗹	𝗺	𝗻	𝗼	𝗽	𝗾	𝗿
U+1D60x	𝘀	𝘁	𝘂	𝘃	𝘄	𝘅	𝘆	𝘇	𝘈	𝘉	𝘊	𝘋	𝘌	𝘍	𝘎	𝘏
U+1D61x	𝘐	𝘑	𝘒	𝘓	𝘔	𝘕	𝘖	𝘗	𝘘	𝘙	𝘚	𝘛	𝘜	𝘝	𝘞	𝘟
U+1D62x	𝘠	𝘡	𝘢	𝘣	𝘤	𝘥	𝘦	𝘧	𝘨	𝘩	𝘪	𝘫	𝘬	𝘭	𝘮	𝘯
U+1D63x	𝘰	𝘱	𝘲	𝘳	𝘴	𝘵	𝘶	𝘷	𝘸	𝘹	𝘺	𝘻	𝘼	𝘽	𝘾	𝘿
U+1D64x	𝙀	𝙁	𝙂	𝙃	𝙄	𝙅	𝙆	𝙇	𝙈	𝙉	𝙊	𝙋	𝙌	𝙍	𝙎	𝙏
U+1D65x	𝙐	𝙑	𝙒	𝙓	𝙔	𝙕	𝙖	𝙗	𝙘	𝙙	𝙚	𝙛	𝙜	𝙝	𝙞	𝙟
U+1D66x	𝙠	𝙡	𝙢	𝙣	𝙤	𝙥	𝙦	𝙧	𝙨	𝙩	𝙪	𝙫	𝙬	𝙭	𝙮	𝙯
U+1D67x	𝙰	𝙱	𝙲	𝙳	𝙴	𝙵	𝙶	𝙷	𝙸	𝙹	𝙺	𝙻	𝙼	𝙽	𝙾	𝙿
U+1D68x	𝚀	𝚁	𝚂	𝚃	𝚄	𝚅	𝚆	𝚇	𝚈	𝚉	𝚊	𝚋	𝚌	𝚍	𝚎	𝚏
U+1D69x	𝚐	𝚑	𝚒	𝚓	𝚔	𝚕	𝚖	𝚗	𝚘	𝚙	𝚚	𝚛	𝚜	𝚝	𝚞	𝚟
U+1D6Ax	𝚠	𝚡	𝚢	𝚣	𝚤	𝚥			𝚨	𝚩	𝚪	𝚫	𝚬	𝚭	𝚮	𝚯
U+1D6Bx	𝚰	𝚱	𝚲	𝚳	𝚴	𝚵	𝚶	𝚷	𝚸	𝚹	𝚺	𝚻	𝚼	𝚽	𝚾	𝚿
U+1D6Cx	𝛀	𝛁	𝛂	𝛃	𝛄	𝛅	𝛆	𝛇	𝛈	𝛉	𝛊	𝛋	𝛌	𝛍	𝛎	𝛏
U+1D6Dx	𝛐	𝛑	𝛒	𝛓	𝛔	𝛕	𝛖	𝛗	𝛘	𝛙	𝛚	𝛛	𝛜	𝛝	𝛞	𝛟
U+1D6Ex	𝛠	𝛡	𝛢	𝛣	𝛤	𝛥	𝛦	𝛧	𝛨	𝛩	𝛪	𝛫	𝛬	𝛭	𝛮	𝛯
U+1D6Fx	𝛰	𝛱	𝛲	𝛳	𝛴	𝛵	𝛶	𝛷	𝛸	𝛹	𝛺	𝛻	𝛼	𝛽	𝛾	𝛿
U+1D70x	𝜀	𝜁	𝜂	𝜃	𝜄	𝜅	𝜆	𝜇	𝜈	𝜉	𝜊	𝜋	𝜌	𝜍	𝜎	𝜏
U+1D71x	𝜐	𝜑	𝜒	𝜓	𝜔	𝜕	𝜖	𝜗	𝜘	𝜙	𝜚	𝜛	𝜜	𝜝	𝜞	𝜟
U+1D72x	𝜠	𝜡	𝜢	𝜣	𝜤	𝜥	𝜦	𝜧	𝜨	𝜩	𝜪	𝜫	𝜬	𝜭	𝜮	𝜯
U+1D73x	𝜰	𝜱	𝜲	𝜳	𝜴	𝜵	𝜶	𝜷	𝜸	𝜹	𝜺	𝜻	𝜼	𝜽	𝜾	𝜿
U+1D74x	𝝀	𝝁	𝝂	𝝃	𝝄	𝝅	𝝆	𝝇	𝝈	𝝉	𝝊	𝝋	𝝌	𝝍	𝝎	𝝏
U+1D75x	𝝐	𝝑	𝝒	𝝓	𝝔	𝝕	𝝖	𝝗	𝝘	𝝙	𝝚	𝝛	𝝜	𝝝	𝝞	𝝟
U+1D76x	𝝠	𝝡	𝝢	𝝣	𝝤	𝝥	𝝦	𝝧	𝝨	𝝩	𝝪	𝝫	𝝬	𝝭	𝝮	𝝯
U+1D77x	𝝰	𝝱	𝝲	𝝳	𝝴	𝝵	𝝶	𝝷	𝝸	𝝹	𝝺	𝝻	𝝼	𝝽	𝝾	𝝿
U+1D78x	𝞀	𝞁	𝞂	𝞃	𝞄	𝞅	𝞆	𝞇	𝞈	𝞉	𝞊	𝞋	𝞌	𝞍	𝞎	𝞏
U+1D79x	𝞐	𝞑	𝞒	𝞓	𝞔	𝞕	𝞖	𝞗	𝞘	𝞙	𝞚	𝞛	𝞜	𝞝	𝞞	𝞟
U+1D7Ax	𝞠	𝞡	𝞢	𝞣	𝞤	𝞥	𝞦	𝞧	𝞨	𝞩	𝞪	𝞫	𝞬	𝞭	𝞮	𝞯
U+1D7Bx	𝞰	𝞱	𝞲	𝞳	𝞴	𝞵	𝞶	𝞷	𝞸	𝞹	𝞺	𝞻	𝞼	𝞽	𝞾	𝞿
U+1D7Cx	𝟀	𝟁	𝟂	𝟃	𝟄	𝟅	𝟆	𝟇	𝟈	𝟉	𝟊	𝟋			𝟎	𝟏
U+1D7Dx	𝟐	𝟑	𝟒	𝟓	𝟔	𝟕	𝟖	𝟗	𝟘	𝟙	𝟚	𝟛	𝟜	𝟝	𝟞	𝟟
U+1D7Ex	𝟠	𝟡	𝟢	𝟣	𝟤	𝟥	𝟦	𝟧	𝟨	𝟩	𝟪	𝟫	𝟬	𝟭	𝟮	𝟯
U+1D7Fx	𝟰	𝟱	𝟲	𝟳	𝟴	𝟵	𝟶	𝟷	𝟸	𝟹	𝟺	𝟻	𝟼	𝟽	𝟾	𝟿
Notes 1.^ As of Unicode version 16.0 2.^ Grey areas indicate non-assigned code points

Letterlike Symbols block

The Letterlike Symbols block (U+2100–U+214F) includes variables. Most alphabetic math symbols are in the Mathematical Alphanumeric Symbols block shown above.

The math subset of this block is U+2102, U+2107, U+210A–U+2113, U+2115, U+2118–U+211D, U+2124, U+2128–U+2129, U+212C–U+212D, U+212F–U+2131, U+2133–U+2138, U+213C–U+2149, and U+214B.^[4]

Letterlike Symbols^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+210x	℀	℁	ℂ	℃	℄	℅	℆	ℇ	℈	℉	ℊ	ℋ	ℌ	ℍ	ℎ	ℏ
U+211x	ℐ	ℑ	ℒ	ℓ	℔	ℕ	№	℗	℘	ℙ	ℚ	ℛ	ℜ	ℝ	℞	℟
U+212x	℠	℡	™	℣	ℤ	℥	Ω	℧	ℨ	℩	K	Å	ℬ	ℭ	℮	ℯ
U+213x	ℰ	ℱ	Ⅎ	ℳ	ℴ	ℵ	ℶ	ℷ	ℸ	ℹ	℺	℻	ℼ	ℽ	ℾ	ℿ
U+214x	⅀	⅁	⅂	⅃	⅄	ⅅ	ⅆ	ⅇ	ⅈ	ⅉ	⅊	⅋	⅌	⅍	ⅎ	⅏
Notes 1.^ As of Unicode version 16.0

Miscellaneous Mathematical Symbols-A block

The Miscellaneous Mathematical Symbols-A block (U+27C0–U+27EF) contains characters for mathematical, logical, and database notation.

Miscellaneous Mathematical Symbols-A^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+27Cx	⟀	⟁	⟂	⟃	⟄	⟅	⟆	⟇	⟈	⟉	⟊	⟋	⟌	⟍	⟎	⟏
U+27Dx	⟐	⟑	⟒	⟓	⟔	⟕	⟖	⟗	⟘	⟙	⟚	⟛	⟜	⟝	⟞	⟟
U+27Ex	⟠	⟡	⟢	⟣	⟤	⟥	⟦	⟧	⟨	⟩	⟪	⟫	⟬	⟭	⟮	⟯
Notes 1.^ As of Unicode version 16.0

Miscellaneous Mathematical Symbols-B block

The Miscellaneous Mathematical Symbols-B block (U+2980–U+29FF) contains miscellaneous mathematical symbols, including brackets, angles, and circle symbols.

Miscellaneous Mathematical Symbols-B^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+298x	⦀	⦁	⦂	⦃	⦄	⦅	⦆	⦇	⦈	⦉	⦊	⦋	⦌	⦍	⦎	⦏
U+299x	⦐	⦑	⦒	⦓	⦔	⦕	⦖	⦗	⦘	⦙	⦚	⦛	⦜	⦝	⦞	⦟
U+29Ax	⦠	⦡	⦢	⦣	⦤	⦥	⦦	⦧	⦨	⦩	⦪	⦫	⦬	⦭	⦮	⦯
U+29Bx	⦰	⦱	⦲	⦳	⦴	⦵	⦶	⦷	⦸	⦹	⦺	⦻	⦼	⦽	⦾	⦿
U+29Cx	⧀	⧁	⧂	⧃	⧄	⧅	⧆	⧇	⧈	⧉	⧊	⧋	⧌	⧍	⧎	⧏
U+29Dx	⧐	⧑	⧒	⧓	⧔	⧕	⧖	⧗	⧘	⧙	⧚	⧛	⧜	⧝	⧞	⧟
U+29Ex	⧠	⧡	⧢	⧣	⧤	⧥	⧦	⧧	⧨	⧩	⧪	⧫	⧬	⧭	⧮	⧯
U+29Fx	⧰	⧱	⧲	⧳	⧴	⧵	⧶	⧷	⧸	⧹	⧺	⧻	⧼	⧽	⧾	⧿
Notes 1.^ As of Unicode version 16.0

Miscellaneous Technical block

The Miscellaneous Technical block (U+2300–U+23FF) includes braces and operators.

The math subset of this block is U+2308–U+230B, U+2320–U+2321, U+237C, U+239B–U+23B5, 23B7, U+23D0, and U+23DC–U+23E2.

Miscellaneous Technical^[1]^[2] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+230x	⌀	⌁	⌂	⌃	⌄	⌅	⌆	⌇	⌈	⌉	⌊	⌋	⌌	⌍	⌎	⌏
U+231x	⌐	⌑	⌒	⌓	⌔	⌕	⌖	⌗	⌘	⌙	⌚	⌛	⌜	⌝	⌞	⌟
U+232x	⌠	⌡	⌢	⌣	⌤	⌥	⌦	⌧	⌨	〈	〉	⌫	⌬	⌭	⌮	⌯
U+233x	⌰	⌱	⌲	⌳	⌴	⌵	⌶	⌷	⌸	⌹	⌺	⌻	⌼	⌽	⌾	⌿
U+234x	⍀	⍁	⍂	⍃	⍄	⍅	⍆	⍇	⍈	⍉	⍊	⍋	⍌	⍍	⍎	⍏
U+235x	⍐	⍑	⍒	⍓	⍔	⍕	⍖	⍗	⍘	⍙	⍚	⍛	⍜	⍝	⍞	⍟
U+236x	⍠	⍡	⍢	⍣	⍤	⍥	⍦	⍧	⍨	⍩	⍪	⍫	⍬	⍭	⍮	⍯
U+237x	⍰	⍱	⍲	⍳	⍴	⍵	⍶	⍷	⍸	⍹	⍺	⍻	⍼	⍽	⍾	⍿
U+238x	⎀	⎁	⎂	⎃	⎄	⎅	⎆	⎇	⎈	⎉	⎊	⎋	⎌	⎍	⎎	⎏
U+239x	⎐	⎑	⎒	⎓	⎔	⎕	⎖	⎗	⎘	⎙	⎚	⎛	⎜	⎝	⎞	⎟
U+23Ax	⎠	⎡	⎢	⎣	⎤	⎥	⎦	⎧	⎨	⎩	⎪	⎫	⎬	⎭	⎮	⎯
U+23Bx	⎰	⎱	⎲	⎳	⎴	⎵	⎶	⎷	⎸	⎹	⎺	⎻	⎼	⎽	⎾	⎿
U+23Cx	⏀	⏁	⏂	⏃	⏄	⏅	⏆	⏇	⏈	⏉	⏊	⏋	⏌	⏍	⏎	⏏
U+23Dx	⏐	⏑	⏒	⏓	⏔	⏕	⏖	⏗	⏘	⏙	⏚	⏛	⏜	⏝	⏞	⏟
U+23Ex	⏠	⏡	⏢	⏣	⏤	⏥	⏦	⏧	⏨	⏩	⏪	⏫	⏬	⏭	⏮	⏯
U+23Fx	⏰	⏱	⏲	⏳	⏴	⏵	⏶	⏷	⏸	⏹	⏺	⏻	⏼	⏽	⏾	⏿
Notes 1.^ As of Unicode version 16.0 2.^ Unicode code points U+2329 and U+232A are deprecated as of Unicode version 5.2

Geometric Shapes block

The Geometric Shapes block (U+25A0–U+25FF) contains geometric shape symbols.

The math subset of this block is U+25A0–25A1, U+25AE–25B7, U+25BC–25C1, U+25C6–25C7, U+25CA–25CB, U+25CF–25D3, U+25E2, U+25E4, U+25E7–25EC, and U+25F8–25FF.

Geometric Shapes^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+25Ax	■	□	▢	▣	▤	▥	▦	▧	▨	▩	▪	▫	▬	▭	▮	▯
U+25Bx	▰	▱	▲	△	▴	▵	▶	▷	▸	▹	►	▻	▼	▽	▾	▿
U+25Cx	◀	◁	◂	◃	◄	◅	◆	◇	◈	◉	◊	○	◌	◍	◎	●
U+25Dx	◐	◑	◒	◓	◔	◕	◖	◗	◘	◙	◚	◛	◜	◝	◞	◟
U+25Ex	◠	◡	◢	◣	◤	◥	◦	◧	◨	◩	◪	◫	◬	◭	◮	◯
U+25Fx	◰	◱	◲	◳	◴	◵	◶	◷	◸	◹	◺	◻	◼	◽	◾	◿
Notes 1.^ As of Unicode version 16.0

Arrows block

The Arrows block (U+2190–U+21FF) contains line, curve, and semicircle arrows and arrow-like operators.

The math subset of this block is U+2190–U+21A7, U+21A9–U+21AE, U+21B0–U+21B1, U+21B6–U+21B7, U+21BC–U+21DB, U+21DD, U+21E4–U+21E5, U+21F4–U+21FF.^[5]

Arrows^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+219x	←	↑	→	↓	↔	↕	↖	↗	↘	↙	↚	↛	↜	↝	↞	↟
U+21Ax	↠	↡	↢	↣	↤	↥	↦	↧	↨	↩	↪	↫	↬	↭	↮	↯
U+21Bx	↰	↱	↲	↳	↴	↵	↶	↷	↸	↹	↺	↻	↼	↽	↾	↿
U+21Cx	⇀	⇁	⇂	⇃	⇄	⇅	⇆	⇇	⇈	⇉	⇊	⇋	⇌	⇍	⇎	⇏
U+21Dx	⇐	⇑	⇒	⇓	⇔	⇕	⇖	⇗	⇘	⇙	⇚	⇛	⇜	⇝	⇞	⇟
U+21Ex	⇠	⇡	⇢	⇣	⇤	⇥	⇦	⇧	⇨	⇩	⇪	⇫	⇬	⇭	⇮	⇯
U+21Fx	⇰	⇱	⇲	⇳	⇴	⇵	⇶	⇷	⇸	⇹	⇺	⇻	⇼	⇽	⇾	⇿
Notes 1.^ As of Unicode version 16.0

Supplemental Arrows-A block

The Supplemental Arrows-A block (U+27F0–U+27FF) contains arrows and arrow-like operators.

Supplemental Arrows-A^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+27Fx	⟰	⟱	⟲	⟳	⟴	⟵	⟶	⟷	⟸	⟹	⟺	⟻	⟼	⟽	⟾	⟿
Notes 1.^ As of Unicode version 16.0

Supplemental Arrows-B block

The Supplemental Arrows-B block (U+2900–U+297F) contains arrows and arrow-like operators (arrow tails, crossing arrows, curved arrows, and harpoons).

Supplemental Arrows-B^[1] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+290x	⤀	⤁	⤂	⤃	⤄	⤅	⤆	⤇	⤈	⤉	⤊	⤋	⤌	⤍	⤎	⤏
U+291x	⤐	⤑	⤒	⤓	⤔	⤕	⤖	⤗	⤘	⤙	⤚	⤛	⤜	⤝	⤞	⤟
U+292x	⤠	⤡	⤢	⤣	⤤	⤥	⤦	⤧	⤨	⤩	⤪	⤫	⤬	⤭	⤮	⤯
U+293x	⤰	⤱	⤲	⤳	⤴	⤵	⤶	⤷	⤸	⤹	⤺	⤻	⤼	⤽	⤾	⤿
U+294x	⥀	⥁	⥂	⥃	⥄	⥅	⥆	⥇	⥈	⥉	⥊	⥋	⥌	⥍	⥎	⥏
U+295x	⥐	⥑	⥒	⥓	⥔	⥕	⥖	⥗	⥘	⥙	⥚	⥛	⥜	⥝	⥞	⥟
U+296x	⥠	⥡	⥢	⥣	⥤	⥥	⥦	⥧	⥨	⥩	⥪	⥫	⥬	⥭	⥮	⥯
U+297x	⥰	⥱	⥲	⥳	⥴	⥵	⥶	⥷	⥸	⥹	⥺	⥻	⥼	⥽	⥾	⥿
Notes 1.^ As of Unicode version 16.0

Miscellaneous Symbols and Arrows block

The Miscellaneous Symbols and Arrows block (U+2B00–U+2BFF Arrows) contains arrows and geometric shapes with various fills.

The math subset of this block is U+2B30–U+2B44, U+2B47–U+2B4C.^[6]

Miscellaneous Symbols and Arrows^[1]^[2] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+2B0x	⬀	⬁	⬂	⬃	⬄	⬅	⬆	⬇	⬈	⬉	⬊	⬋	⬌	⬍	⬎	⬏
U+2B1x	⬐	⬑	⬒	⬓	⬔	⬕	⬖	⬗	⬘	⬙	⬚	⬛	⬜	⬝	⬞	⬟
U+2B2x	⬠	⬡	⬢	⬣	⬤	⬥	⬦	⬧	⬨	⬩	⬪	⬫	⬬	⬭	⬮	⬯
U+2B3x	⬰	⬱	⬲	⬳	⬴	⬵	⬶	⬷	⬸	⬹	⬺	⬻	⬼	⬽	⬾	⬿
U+2B4x	⭀	⭁	⭂	⭃	⭄	⭅	⭆	⭇	⭈	⭉	⭊	⭋	⭌	⭍	⭎	⭏
U+2B5x	⭐	⭑	⭒	⭓	⭔	⭕	⭖	⭗	⭘	⭙	⭚	⭛	⭜	⭝	⭞	⭟
U+2B6x	⭠	⭡	⭢	⭣	⭤	⭥	⭦	⭧	⭨	⭩	⭪	⭫	⭬	⭭	⭮	⭯
U+2B7x	⭰	⭱	⭲	⭳			⭶	⭷	⭸	⭹	⭺	⭻	⭼	⭽	⭾	⭿
U+2B8x	⮀	⮁	⮂	⮃	⮄	⮅	⮆	⮇	⮈	⮉	⮊	⮋	⮌	⮍	⮎	⮏
U+2B9x	⮐	⮑	⮒	⮓	⮔	⮕		⮗	⮘	⮙	⮚	⮛	⮜	⮝	⮞	⮟
U+2BAx	⮠	⮡	⮢	⮣	⮤	⮥	⮦	⮧	⮨	⮩	⮪	⮫	⮬	⮭	⮮	⮯
U+2BBx	⮰	⮱	⮲	⮳	⮴	⮵	⮶	⮷	⮸	⮹	⮺	⮻	⮼	⮽	⮾	⮿
U+2BCx	⯀	⯁	⯂	⯃	⯄	⯅	⯆	⯇	⯈	⯉	⯊	⯋	⯌	⯍	⯎	⯏
U+2BDx	⯐	⯑	⯒	⯓	⯔	⯕	⯖	⯗	⯘	⯙	⯚	⯛	⯜	⯝	⯞	⯟
U+2BEx	⯠	⯡	⯢	⯣	⯤	⯥	⯦	⯧	⯨	⯩	⯪	⯫	⯬	⯭	⯮	⯯
U+2BFx	⯰	⯱	⯲	⯳	⯴	⯵	⯶	⯷	⯸	⯹	⯺	⯻	⯼	⯽	⯾	⯿
Notes 1.^ As of Unicode version 16.0 2.^ Grey areas indicate non-assigned code points

Combining Diacritical Marks for Symbols block

The Combining Diacritical Marks for Symbols block contains arrows, dots, enclosures, and overlays for modifying symbol characters.

The math subset of this block is U+20D0–U+20DC, U+20E1, U+20E5–U+20E6, and U+20EB–U+20EF.

Combining Diacritical Marks for Symbols^[1]^[2] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+20Dx	◌⃐	◌⃑	◌⃒	◌⃓	◌⃔	◌⃕	◌⃖	◌⃗	◌⃘	◌⃙	◌⃚	◌⃛	◌⃜	◌⃝	◌⃞	◌⃟
U+20Ex	◌⃠	◌⃡	◌⃢	◌⃣	◌⃤	◌⃥	◌⃦	◌⃧	◌⃨	◌⃩	◌⃪	◌⃫	◌⃬	◌⃭	◌⃮	◌⃯
U+20Fx	◌⃰
Notes 1.^ As of Unicode version 16.0 2.^ Grey areas indicate non-assigned code points

Arabic Mathematical Alphabetic Symbols block

The Arabic Mathematical Alphabetic Symbols block (U+1EE00–U+1EEFF) contains characters used in Arabic mathematical expressions.

Arabic Mathematical Alphabetic Symbols^[1]^[2] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+1EE0x	𞸀	𞸁	𞸂	𞸃		𞸅	𞸆	𞸇	𞸈	𞸉	𞸊	𞸋	𞸌	𞸍	𞸎	𞸏
U+1EE1x	𞸐	𞸑	𞸒	𞸓	𞸔	𞸕	𞸖	𞸗	𞸘	𞸙	𞸚	𞸛	𞸜	𞸝	𞸞	𞸟
U+1EE2x		𞸡	𞸢		𞸤			𞸧		𞸩	𞸪	𞸫	𞸬	𞸭	𞸮	𞸯
U+1EE3x	𞸰	𞸱	𞸲		𞸴	𞸵	𞸶	𞸷		𞸹		𞸻
U+1EE4x			𞹂					𞹇		𞹉		𞹋		𞹍	𞹎	𞹏
U+1EE5x		𞹑	𞹒		𞹔			𞹗		𞹙		𞹛		𞹝		𞹟
U+1EE6x		𞹡	𞹢		𞹤			𞹧	𞹨	𞹩	𞹪		𞹬	𞹭	𞹮	𞹯
U+1EE7x	𞹰	𞹱	𞹲		𞹴	𞹵	𞹶	𞹷		𞹹	𞹺	𞹻	𞹼		𞹾
U+1EE8x	𞺀	𞺁	𞺂	𞺃	𞺄	𞺅	𞺆	𞺇	𞺈	𞺉		𞺋	𞺌	𞺍	𞺎	𞺏
U+1EE9x	𞺐	𞺑	𞺒	𞺓	𞺔	𞺕	𞺖	𞺗	𞺘	𞺙	𞺚	𞺛
U+1EEAx		𞺡	𞺢	𞺣		𞺥	𞺦	𞺧	𞺨	𞺩		𞺫	𞺬	𞺭	𞺮	𞺯
U+1EEBx	𞺰	𞺱	𞺲	𞺳	𞺴	𞺵	𞺶	𞺷	𞺸	𞺹	𞺺	𞺻
U+1EECx
U+1EEDx
U+1EEEx
U+1EEFx	𞻰	𞻱
Notes 1.^ As of Unicode version 16.0 2.^ Grey areas indicate non-assigned code points

Mathematical characters also appear in other blocks. Below is a list of these characters as of Unicode version 16.0:

Basic Latin block

U+002B	+	PLUS SIGN
U+002D	-	HYPHEN-MINUS^[7]
U+003C	<	LESS-THAN SIGN
U+003D	=	EQUALS SIGN
U+003E	>	GREATER-THAN SIGN
U+005E	^	CIRCUMFLEX ACCENT
U+007C	\|	VERTICAL LINE
U+007E	~	TILDE

Latin-1 Supplement block

U+00AC	¬	NOT SIGN
U+00B0	°	DEGREE SIGN^[8]
U+00B1	±	PLUS-MINUS SIGN
U+00D7	×	MULTIPLICATION SIGN
U+00F7	÷	DIVISION SIGN

Greek and Coptic block

U+03D0	ϐ	GREEK BETA SYMBOL
U+03D1	ϑ	GREEK THETA SYMBOL
U+03D2	ϒ	GREEK UPSILON WITH HOOK SYMBOL
U+03D5	ϕ	GREEK PHI SYMBOL
U+03F0	ϰ	GREEK KAPPA SYMBOL
U+03F1	ϱ	GREEK RHO SYMBOL
U+03F4	ϴ	GREEK CAPITAL THETA SYMBOL
U+03F5	ϵ	GREEK LUNATE EPSILON SYMBOL
U+03F6	϶	GREEK REVERSED LUNATE EPSILON SYMBOL

Arabic block

U+0606	؆	ARABIC-INDIC CUBE ROOT
U+0607	؇	ARABIC-INDIC FOURTH ROOT
U+0608	؈	ARABIC RAY

General Punctuation block

U+2016	‖	DOUBLE VERTICAL LINE
U+2032	′	PRIME
U+2033	″	DOUBLE PRIME
U+2034	‴	TRIPLE PRIME
U+2040	⁀	CHARACTER TIE
U+2044	⁄	FRACTION SLASH
U+2052	⁒	COMMERCIAL MINUS SIGN
U+2061	note	FUNCTION APPLICATION
U+2062	note	INVISIBLE TIMES
U+2063	note	INVISIBLE SEPARATOR
U+2064	note	INVISIBLE PLUS

Note: non-marking character

Superscripts and Subscripts block

U+207A	⁺	SUPERSCRIPT PLUS SIGN
U+207B	⁻	SUPERSCRIPT MINUS
U+207C	⁼	SUPERSCRIPT EQUALS SIGN
U+207D	⁽	SUPERSCRIPT LEFT PARENTHESIS
U+207E	⁾	SUPERSCRIPT RIGHT PARENTHESIS
U+208A	₊	SUBSCRIPT PLUS SIGN
U+208B	₋	SUBSCRIPT MINUS
U+208C	₌	SUBSCRIPT EQUALS SIGN
U+208D	₍	SUBSCRIPT LEFT PARENTHESIS
U+208E	₎	SUBSCRIPT RIGHT PARENTHESIS

Miscellaneous Symbols block

U+2605	★	BLACK STAR
U+2606	☆	WHITE STAR
U+2640	♀	FEMALE SIGN
U+2642	♂	MALE SIGN
U+2660	♠	BLACK SPADE SUIT
U+2661	♡	WHITE HEART SUIT
U+2662	♢	WHITE DIAMOND SUIT
U+2663	♣	BLACK CLUB SUIT
U+266D	♭	MUSIC FLAT SIGN
U+266E	♮	MUSIC NATURAL SIGN
U+266F	♯	MUSIC SHARP SIGN

Alphabetic Presentation Forms block

U+FB29

﬩

HEBREW LETTER ALTERNATIVE PLUS SIGN

Small Form Variants block

U+FE61	﹡	SMALL ASTERISK
U+FE62	﹢	SMALL PLUS SIGN
U+FE63	﹣	SMALL HYPHEN-MINUS
U+FE64	﹤	SMALL LESS-THAN SIGN
U+FE65	﹥	SMALL GREATER-THAN SIGN
U+FE66	﹦	SMALL EQUALS SIGN
U+FE68	﹨	SMALL REVERSE SOLIDUS

Halfwidth and Fullwidth Forms block

U+FF0B	＋	FULLWIDTH PLUS SIGN
U+FF1C	＜	FULLWIDTH LESS-THAN SIGN
U+FF1D	＝	FULLWIDTH EQUALS SIGN
U+FF1E	＞	FULLWIDTH GREATER-THAN SIGN
U+FF3C	＼	FULLWIDTH REVERSE SOLIDUS
U+FF3E	＾	FULLWIDTH CIRCUMFLEX ACCENT
U+FF5C	｜	FULLWIDTH VERTICAL LINE
U+FF5E	～	FULLWIDTH TILDE
U+FFE2	￢	FULLWIDTH NOT SIGN
U+FFE9	￩	HALFWIDTH LEFTWARDS ARROW
U+FFEA	￪	HALFWIDTH UPWARDS ARROW
U+FFEB	￫	HALFWIDTH RIGHTWARDS ARROW
U+FFEC	￬	HALFWIDTH DOWNWARDS ARROW

Garay block

U+10D8E	𐶎	GARAY PLUS SIGN
U+10D8F	𐶏	GARAY MINUS SIGN

Glossary of mathematical symbols
List of logic symbols
Greek letters used in mathematics, science, and engineering
List of letters used in mathematics and science
List of mathematical uses of Latin letters
Unicode subscripts and superscripts
Unicode symbols
CJK Compatibility Unicode symbols includes symbols for SI units
Units for order of magnitude shows position of SI units

[1]
"Unicode Technical Report #25: Unicode Support for Mathematics" (PDF). The Unicode Consortium. 2 April 2012. Retrieved 14 August 2014.
[2]
"Unicode Character Database: Derived Core Properties". The Unicode Consortium. 19 February 2014. Retrieved 14 August 2014.
[3]
"Unicode Technical Annex #44: Unicode Character Database" (PDF). The Unicode Consortium. 25 September 2013. Retrieved 14 August 2014.
[4]
See https://www.unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt
[5]
More symbols are supported by TeX math packages, see e.g. Will Robertson, Symbols defined by unicode-math.
[6]
The quadruple arrows U+2B45 and U+2B46 are supported by TeX math packages, per Will Robertson, Symbols defined by unicode-math.
[7]
As per Unicode 16.0.0, the ASCII hyphen-minus is not a mathematical symbol. To express the minus sign in math, U+2212 − MINUS SIGN is used instead.
[8]
As per Unicode 16.0.0, the degree sign is not a mathematical symbol, since it is a measurement unit symbol rather than a math symbol. Consistently, TeX packages support many non-math symbols. But this article is designed to cover only Unicode characters with a derived property of "Math".

Mathematical Markup Language (MathML) W3C Recommendation. 3.0 (2nd ed.). W3C. 10 April 2014.
Images of glyphs in section 6.3.3 of the Mathematical Markup Language (MathML) W3C Recommendation. 2.0 (2nd ed.). W3C. 21 February 2001.

[utr25-1] [1]
"Unicode Technical Report #25: Unicode Support for Mathematics" (PDF). The Unicode Consortium. 2 April 2012. Retrieved 14 August 2014.

[2] [2]
"Unicode Character Database: Derived Core Properties". The Unicode Consortium. 19 February 2014. Retrieved 14 August 2014.

[3] [3]
"Unicode Technical Annex #44: Unicode Character Database" (PDF). The Unicode Consortium. 25 September 2013. Retrieved 14 August 2014.

[4] [4]
See https://www.unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt

[5] [5]
More symbols are supported by TeX math packages, see e.g. Will Robertson, Symbols defined by unicode-math.

[6] [6]
The quadruple arrows U+2B45 and U+2B46 are supported by TeX math packages, per Will Robertson, Symbols defined by unicode-math.

[7] [7]
As per Unicode 16.0.0, the ASCII hyphen-minus is not a mathematical symbol. To express the minus sign in math, U+2212 − MINUS SIGN is used instead.

[8] [8]
As per Unicode 16.0.0, the degree sign is not a mathematical symbol, since it is a measurement unit symbol rather than a math symbol. Consistently, TeX packages support many non-math symbols. But this article is designed to cover only Unicode characters with a derived property of "Math".

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

Mathematical Operators block

Supplemental Mathematical Operators block

Mathematical Alphanumeric Symbols block

Letterlike Symbols block

Miscellaneous Mathematical Symbols-A block

Miscellaneous Mathematical Symbols-B block

Miscellaneous Technical block

Geometric Shapes block

Arrows block

Supplemental Arrows-A block

Supplemental Arrows-B block

Miscellaneous Symbols and Arrows block

Combining Diacritical Marks for Symbols block

Arabic Mathematical Alphabetic Symbols block

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Mathematical operators and symbols in Unicode

Mathematical Operators block

Supplemental Mathematical Operators block

Mathematical Alphanumeric Symbols block

Letterlike Symbols block

Miscellaneous Mathematical Symbols-A block

Miscellaneous Mathematical Symbols-B block

Miscellaneous Technical block

Geometric Shapes block

Arrows block

Supplemental Arrows-A block

Supplemental Arrows-B block

Miscellaneous Symbols and Arrows block

Combining Diacritical Marks for Symbols block

Arabic Mathematical Alphabetic Symbols block

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Dedicated blocks

Characters in other blocks

See also

References

External links