Sheffer Stroke (NAND) ○◂｜appendage｜___｜20260628174208-01-•

NAND	…
Definition	$\overline{x\cdot y}$
Truth table	$(0111)$
Logic gate
Normal forms	…
Disjunctive	$\overline{x}+\overline{y}$
Conjunctive	$\overline{x}+\overline{y}$
Zhegalkin polynomial	$1\oplus xy$
Post’s lattices	…
0-preserving	no
1-preserving	no
Monotone	no
Affine	no
Self-dual	no

Sheffer stroke

(echo:: @ ᯤ)