---

Step * of Lemma nat_plus_inc

ℕ+ ⊆r ℕ
BY
{ TACTIC:(D 0 THEN Auto) }

---

Latex:

---

Latex:
\mBbbN{}\msupplus{}  \msubseteq{}r  \mBbbN{}


By

---

Latex:
TACTIC:(D  0  THEN  Auto)

---

Home Index