Wiktionary

∾

See also: Appendix:Variations of "="
∾ U+223E, ∾
INVERTED LAZY S
← ∽
[U+223D] 		Mathematical Operators ∿ →
[U+223F]

Translingual edit

Description edit

An inverted lazy S.

Symbol edit

∾

  1. (mathematics) logical negation[1]

Usage notes edit

Resembles manuscript variants of the infinity sign, ∞ (e.g. in Euler's notebooks).

References edit

  1. ^ Kurt Gödel, "Über formal unentscheidbare Sätze der Principia Mathematica und verwandter Systeme I" (1931), DOI 10.1007/BF01700692, page 177
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