xia@lemmy.sdf.org to Showerthoughts@lemmy.worldEnglish · 2 days agoImaginary numbers are more real than infinity.message-squaremessage-square44fedilinkarrow-up194arrow-down117
arrow-up177arrow-down1message-squareImaginary numbers are more real than infinity.xia@lemmy.sdf.org to Showerthoughts@lemmy.worldEnglish · 2 days agomessage-square44fedilink
minus-squareLeate_Wonceslace@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up1·edit-22 days agoA set is infinite exactly when there exists a proper subset whose cardinality is that of the set.
A set is infinite exactly when there exists a proper subset whose cardinality is that of the set.