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Theorems · Theorem · order theory

lt_of_tsub_lt_tsub_left_of_le

∀ {α : Type u_1} [inst : AddCommSemigroup α] [inst_1 : PartialOrder α] [ExistsAddOfLE α] [AddLeftMono α]
  [inst_4 : Sub α] [OrderedSub α] {a b c : α} [AddLeftReflectLE α] [AddLeftReflectLT α], c ≤ a → a - b < a - c → c < b

See lt_of_tsub_lt_tsub_left for a stronger statement in a linear order.

Defined in
Mathlib.Algebra.Order.Sub.Unbundled.Basic
Cited by
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Foundations
Depth 14 from the axioms · uses propext, Quot.sound
Assumes
AddCommSemigroupPartialOrderExistsAddOfLEAddLeftMonoSubOrderedSubAddLeftReflectLEAddLeftReflectLT

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