Nuprl Lemma : geo-le-pt-from-be

e:BasicGeometry. ∀a,b,c:Point.  ab≤ac supposing B(abc)


Proof




Definitions occuring in Statement :  geo-le-pt: ab≤cd basic-geometry: BasicGeometry geo-between: B(abc) geo-point: Point uimplies: supposing a all: x:A. B[x]
Definitions unfolded in proof :  all: x:A. B[x] uimplies: supposing a member: t ∈ T geo-between: B(abc) and: P ∧ Q not: ¬A implies:  Q false: False geo-le-pt: ab≤cd exists: x:A. B[x] cand: c∧ B basic-geometry: BasicGeometry uall: [x:A]. B[x] subtype_rel: A ⊆B prop: guard: {T}

Latex:
\mforall{}e:BasicGeometry.  \mforall{}a,b,c:Point.    ab\mleq{}ac  supposing  B(abc)



Date html generated: 2020_05_20-AM-09_53_59
Last ObjectModification: 2019_12_23-AM-10_14_55

Theory : euclidean!plane!geometry


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