Nuprl Lemma : topeq_transitivity

∀X:Space. ∀a,b,c:|X|.  (topeq(X;a;b) ⇒ topeq(X;b;c) ⇒ topeq(X;a;c))


Proof




Definitions occuring in Statement :  topeq: topeq(X;a;b),  toptype: |X|,  topspace: Space,  all: ∀x:A. B[x],  implies: P ⇒ Q
Definitions unfolded in proof :  trans: Trans(T;x,y.E[x; y]),  guard: {T},  uall: ∀[x:A]. B[x],  prop: ℙ,  implies: P ⇒ Q,  and: P ∧ Q,  equiv_rel: EquivRel(T;x,y.E[x; y]),  member: t ∈ T,  all: ∀x:A. B[x]
Lemmas referenced :  topspace_wf,  toptype_wf,  topeq_wf,  topeq-equiv
Rules used in proof :  independent_functionElimination,  isectElimination,  productElimination,  hypothesisEquality,  thin,  dependent_functionElimination,  sqequalHypSubstitution,  hypothesis,  lambdaFormation,  sqequalReflexivity,  computationStep,  sqequalTransitivity,  sqequalSubstitution,  extract_by_obid,  introduction,  cut

Latex:
\mforall{}X:Space.  \mforall{}a,b,c:|X|.    (topeq(X;a;b)  {}\mRightarrow{}  topeq(X;b;c)  {}\mRightarrow{}  topeq(X;a;c))



Date html generated: 2018_07_29-AM-09_48_05
Last ObjectModification: 2018_06_21-AM-10_28_32

Theory : inner!product!spaces


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