Nuprl Lemma : geo-congruent-refl
∀e:EuclideanPlane. ∀[a,b:Point].  ab ≅ ab
Proof
Definitions occuring in Statement : 
euclidean-plane: EuclideanPlane, 
geo-congruent: ab ≅ cd, 
geo-point: Point, 
uall: ∀[x:A]. B[x], 
all: ∀x:A. B[x]
Definitions unfolded in proof : 
all: ∀x:A. B[x], 
uall: ∀[x:A]. B[x], 
member: t ∈ T, 
euclidean-plane: EuclideanPlane, 
implies: P ⇒ Q, 
sq_stable: SqStable(P), 
squash: ↓T, 
and: P ∧ Q, 
geo-congruent: ab ≅ cd, 
not: ¬A, 
false: False, 
subtype_rel: A ⊆r B, 
guard: {T}, 
uimplies: b supposing a
Latex:
\mforall{}e:EuclideanPlane.  \mforall{}[a,b:Point].    ab  \mcong{}  ab
Date html generated:
2020_05_20-AM-09_45_19
Last ObjectModification:
2019_11_13-AM-10_45_58
Theory : euclidean!plane!geometry
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