Theorems · Theorem · number theory
Nat.factorial_two
Nat.factorial 2 = 2
- Defined in
- Mathlib.Data.Nat.Factorial.Basic
- Cited by
- 6 results in Mathlib
- Foundations
- Depth 12 from the axioms · uses no axioms
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites1
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Nat.factorialstatement · cited by 616
Cited by6
Results whose statement or proof uses this declaration.
- IsMultiplyPretransitive.alternatingGroup_leproof · cited by 1
- Equiv.Perm.subgroup_eq_top_of_isPreprimitive_of_isSwap_memproof · cited by 1
- Nat.cast_choose_twoproof · cited by 1
- alternatingGroup.eq_bot_of_card_le_twoproof · cited by 1
- Equiv.Perm.has_swap_mem_of_lt_stabilizerproof · cited by 1
- Equiv.Perm.subgroup_eq_top_of_nontrivialproof · cited by 0