Hofmaimaier@feddit.org to Science Memes@mander.xyzEnglish · 9 天前everywherefeddit.orgimagemessage-square25fedilinkarrow-up1426arrow-down112
arrow-up1414arrow-down1imageeverywherefeddit.orgHofmaimaier@feddit.org to Science Memes@mander.xyzEnglish · 9 天前message-square25fedilink
minus-squaretetris11@feddit.uklinkfedilinkEnglisharrow-up1·8 天前it is not an element of itself, but is a subset of every other set
it is not an element of itself, but is a subset of every other set