Nuprl Lemma : not-geo-strict-between-same
∀e:BasicGeometry-. ∀[a,b:Point].  False supposing a-b-b
Proof
Definitions occuring in Statement : 
basic-geometry-: BasicGeometry-, 
geo-strict-between: a-b-c, 
geo-point: Point, 
uimplies: b supposing a, 
uall: ∀[x:A]. B[x], 
all: ∀x:A. B[x], 
false: False
Definitions unfolded in proof : 
all: ∀x:A. B[x], 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
uimplies: b supposing a, 
false: False, 
subtype_rel: A ⊆r B, 
guard: {T}, 
prop: ℙ, 
implies: P ⇒ Q, 
geo-strict-between: a-b-c, 
and: P ∧ Q, 
geo-sep: a # b, 
geo-between: B(abc), 
not: ¬A
Latex:
\mforall{}e:BasicGeometry-.  \mforall{}[a,b:Point].    False  supposing  a-b-b
Date html generated:
2020_05_20-AM-09_48_39
Last ObjectModification:
2019_11_13-PM-01_56_16
Theory : euclidean!plane!geometry
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