(4steps total) PrintForm Definitions LogicSupplement Sections DiscrMathExt Doc
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At: inhabited uniquely vs exists

  A:Type. (!A (x:Ay:Ax = y)

By: Auto


Generated subgoals:

1 1. A : Type
2. !A
  x:Ay:Ax = y

2 steps
2 1. A : Type
2. x:Ay:Ax = y
  !A

1 step

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universeequalallexists
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(4steps total) PrintForm Definitions LogicSupplement Sections DiscrMathExt Doc