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def definition def or abbrev

zero

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formal statement (Lean)

 109def zero : LogicRat :=

proof body

Definition body.

 110  mk 0 1 (by
 111    intro h
 112    have : toInt (1 : LogicInt) = toInt (0 : LogicInt) := congrArg toInt h
 113    rw [toInt_one, toInt_zero] at this
 114    exact one_ne_zero this)
 115
 116/-- One in `LogicRat`. -/

depends on (8)

Lean names referenced from this declaration's body.