set

Alternate history or alternative history,[1] sometimes abbreviated as AH,[2] is a genre of fiction consisting of stories that are set in worlds in which one or more historical events unfolds differently from how they did in reality

Alternate history or alternative history,[1] sometimes abbreviated as AH,[2] is a genre of fiction consisting of stories that are set in worlds in which one or [...]

In mathematics, a binary relation R on a set X is antisymmetric if there is no pair of distinct elements of X each of which is related by R to the other

In mathematics, a binary relation R on a set X is antisymmetric if there is no pair of distinct elements of X each of which is related by R to the other. More [...]