---

Step * 1 of Lemma church_snd_lemma


1. y : Top@i
2. x : Top@i
⊢ church-snd() (church-pair() x y) ~ y
BY
{ (Unfolds ``church-snd church-pair`` 0⋅ THEN Unfold `church-false` 0⋅ THEN Reduce 0 THEN Auto) }

---

Latex:

---

Latex:

1.  y  :  Top@i
2.  x  :  Top@i
\mvdash{}  church-snd()  (church-pair()  x  y)  \msim{}  y


By

---

Latex:
(Unfolds  ``church-snd  church-pair``  0\mcdot{}  THEN  Unfold  `church-false`  0\mcdot{}  THEN  Reduce  0  THEN  Auto)

---

Home Index