Nuprl Lemma : txpose_perm_sym
∀n:ℕ. ∀i,j:ℕn.  (txpose_perm(i;j) = txpose_perm(j;i) ∈ Sym(n))
Proof
Definitions occuring in Statement : 
txpose_perm: txpose_perm, 
sym_grp: Sym(n)
, 
int_seg: {i..j-}
, 
nat: ℕ
, 
all: ∀x:A. B[x]
, 
natural_number: $n
, 
equal: s = t ∈ T
Definitions unfolded in proof : 
all: ∀x:A. B[x]
, 
member: t ∈ T
, 
uall: ∀[x:A]. B[x]
, 
nat: ℕ
, 
sym_grp: Sym(n)
, 
perm: Perm(T)
, 
prop: ℙ
, 
txpose_perm: txpose_perm, 
squash: ↓T
, 
true: True
Lemmas referenced : 
int_seg_wf, 
nat_wf, 
inv_funs_wf, 
perm_f_wf, 
perm_b_wf, 
mk_perm_wf, 
squash_wf, 
true_wf, 
istype-universe, 
swap_sym, 
txpose_perm_wf, 
perm_properties
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
lambdaFormation_alt, 
cut, 
hypothesis, 
inhabitedIsType, 
hypothesisEquality, 
universeIsType, 
introduction, 
extract_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
natural_numberEquality, 
setElimination, 
rename, 
dependent_set_memberEquality_alt, 
because_Cache, 
dependent_functionElimination, 
applyEquality, 
lambdaEquality_alt, 
imageElimination, 
equalityTransitivity, 
equalitySymmetry, 
functionIsType, 
universeEquality, 
sqequalRule, 
imageMemberEquality, 
baseClosed, 
applyLambdaEquality
Latex:
\mforall{}n:\mBbbN{}.  \mforall{}i,j:\mBbbN{}n.    (txpose\_perm(i;j)  =  txpose\_perm(j;i))
Date html generated:
2019_10_16-PM-00_59_29
Last ObjectModification:
2018_10_08-AM-09_26_34
Theory : perms_1
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