LBLower bound（英语：Upper and lower bounds）, a mathematical concept (order theory) LB培養基 後衛（足球） 黑邊 Linebacker（英语：Linebacker）, a position in American and Canadian
实数完备性是有界閉集。更一般地，這個定理對有限维实向量空间 R n {\displaystyle \mathbb {R} ^{n}} 亦有效。 Upper and Lower Bounds (including the lub axiom)，Springer's Encyclopedia of Mathematics（页面存档备份，存于互联网档案馆）
稀疏尺studied by Redei, Renyi (1949) and then by Leech (1956) and Golay (1972). Due to their efforts the following upper and lower bounds were obtained: max 0 < θ
達文波特-欣策爾序列CITEREFRoselleStanton1970/71 (幫助). Agarwal, P. K.; Sharir, Micha; Shor, P., Sharp upper and lower bounds on the length of general Davenport–Schinzel sequences, Journal of
葛立恆數（原始内容存档于2013-10-19）. Lavrov, Mikhail; Lee, Mitchell; Mackey, John. Improved upper and lower bounds on a geometric Ramsey problem. European Journal of Combinatorics