Nuprl Lemma : cat_arrow_triple_lemma
∀y,x,ob:Top. (cat-arrow(<ob, x, y>) ~ x)
Proof
Definitions occuring in Statement :
cat-arrow: cat-arrow(C),
top: Top,
all: ∀x:A. B[x],
pair: <a, b>,
sqequal: s ~ t
Definitions unfolded in proof :
all: ∀x:A. B[x],
member: t ∈ T,
cat-arrow: cat-arrow(C),
pi2: snd(t),
pi1: fst(t)
Lemmas referenced :
top_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
lambdaFormation,
cut,
hypothesis,
introduction,
extract_by_obid,
sqequalRule
Latex:
\mforall{}y,x,ob:Top. (cat-arrow(<ob, x, y>) \msim{} x)
Date html generated:
2020_05_20-AM-07_49_31
Last ObjectModification:
2017_01_09-PM-00_38_27
Theory : small!categories
Home
Index