File:DeltaSigma2.svg

DescriptionDeltaSigma2.svg Block diagram of a 2nd order ΔΣ-ADC Date 1 October 2006 Source Own work Author Katanzag Permission (Reusing this file) GFDL

DescriptionGreek lc sigma2.svg English: Lowercase Greek letter Σ in word-final position , the 18th letter of the Greek alphabet: ς (U+03C2). Times New

DescriptionGreek lc sigma2 icon.svg English: Greek lowercase sigma icon (final word position) Date 23 January 2024 Source Own work Author Mrmw Other versions

\node (Delta2) [above left of=Pi1] {$\text{P}^\text{NP} = \Delta_2^\text{P}$}; \node (Sigma2) [above left of=Delta2] {$\Sigma_2^\text{P}$}; \node (Pi2)