Nuprl Lemma : geo-between-exchange3
∀e:BasicGeometry-. ∀[a,b,c,d:Point]. (b_c_d) supposing (a_c_d and a_b_c)
Proof
Definitions occuring in Statement :
basic-geometry-: BasicGeometry-,
geo-between: a_b_c,
geo-point: Point,
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
all: ∀x:A. B[x]
Definitions unfolded in proof :
guard: {T},
subtype_rel: A ⊆r B,
prop: ℙ,
member: t ∈ T,
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
all: ∀x:A. B[x]
Lemmas referenced :
geo-point_wf,
Error :basic-geo-primitives_wf,
Error :basic-geo-structure_wf,
basic-geometry-_wf,
subtype_rel_transitivity,
basic-geometry--subtype,
geo-between_wf,
geo-between-inner-trans,
geo-between-symmetry
Rules used in proof :
sqequalRule,
instantiate,
applyEquality,
because_Cache,
hypothesis,
independent_isectElimination,
isectElimination,
hypothesisEquality,
thin,
dependent_functionElimination,
sqequalHypSubstitution,
extract_by_obid,
introduction,
cut,
isect_memberFormation,
lambdaFormation,
sqequalReflexivity,
computationStep,
sqequalTransitivity,
sqequalSubstitution
Latex:
\mforall{}e:BasicGeometry-. \mforall{}[a,b,c,d:Point]. (b\_c\_d) supposing (a\_c\_d and a\_b\_c)
Date html generated:
2017_10_02-PM-04_43_48
Last ObjectModification:
2017_08_05-AM-09_08_09
Theory : euclidean!plane!geometry
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