MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  xmullem2 Structured version   Visualization version   GIF version

Theorem xmullem2 13243
Description: Lemma for xmulneg1 13247. (Contributed by Mario Carneiro, 20-Aug-2015.)
Assertion
Ref Expression
xmullem2 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (𝐵 < 0 ∧ 𝐴 = -∞)) ∨ ((0 < 𝐴𝐵 = +∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ (((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞)) ∨ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞)))))

Proof of Theorem xmullem2
StepHypRef Expression
1 mnfnepnf 11269 . . . . . . . . . . . 12 -∞ ≠ +∞
2 eqeq1 2736 . . . . . . . . . . . . 13 (𝐴 = -∞ → (𝐴 = +∞ ↔ -∞ = +∞))
32necon3bbid 2978 . . . . . . . . . . . 12 (𝐴 = -∞ → (¬ 𝐴 = +∞ ↔ -∞ ≠ +∞))
41, 3mpbiri 257 . . . . . . . . . . 11 (𝐴 = -∞ → ¬ 𝐴 = +∞)
54con2i 139 . . . . . . . . . 10 (𝐴 = +∞ → ¬ 𝐴 = -∞)
65adantl 482 . . . . . . . . 9 ((0 < 𝐵𝐴 = +∞) → ¬ 𝐴 = -∞)
7 0xr 11260 . . . . . . . . . . . . 13 0 ∈ ℝ*
8 nltmnf 13108 . . . . . . . . . . . . 13 (0 ∈ ℝ* → ¬ 0 < -∞)
97, 8ax-mp 5 . . . . . . . . . . . 12 ¬ 0 < -∞
10 breq2 5152 . . . . . . . . . . . 12 (𝐴 = -∞ → (0 < 𝐴 ↔ 0 < -∞))
119, 10mtbiri 326 . . . . . . . . . . 11 (𝐴 = -∞ → ¬ 0 < 𝐴)
1211con2i 139 . . . . . . . . . 10 (0 < 𝐴 → ¬ 𝐴 = -∞)
1312adantr 481 . . . . . . . . 9 ((0 < 𝐴𝐵 = +∞) → ¬ 𝐴 = -∞)
146, 13jaoi 855 . . . . . . . 8 (((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) → ¬ 𝐴 = -∞)
1514a1i 11 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) → ¬ 𝐴 = -∞))
16 simpr 485 . . . . . . . . . 10 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → 𝐵 ∈ ℝ*)
17 xrltnsym 13115 . . . . . . . . . 10 ((𝐵 ∈ ℝ* ∧ 0 ∈ ℝ*) → (𝐵 < 0 → ¬ 0 < 𝐵))
1816, 7, 17sylancl 586 . . . . . . . . 9 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐵 < 0 → ¬ 0 < 𝐵))
1918adantrd 492 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((𝐵 < 0 ∧ 𝐴 = -∞) → ¬ 0 < 𝐵))
20 breq2 5152 . . . . . . . . . . 11 (𝐵 = -∞ → (0 < 𝐵 ↔ 0 < -∞))
219, 20mtbiri 326 . . . . . . . . . 10 (𝐵 = -∞ → ¬ 0 < 𝐵)
2221adantl 482 . . . . . . . . 9 ((𝐴 < 0 ∧ 𝐵 = -∞) → ¬ 0 < 𝐵)
2322a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((𝐴 < 0 ∧ 𝐵 = -∞) → ¬ 0 < 𝐵))
2419, 23jaod 857 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞)) → ¬ 0 < 𝐵))
2515, 24orim12d 963 . . . . . 6 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ 𝐴 = -∞ ∨ ¬ 0 < 𝐵)))
26 ianor 980 . . . . . . 7 (¬ (0 < 𝐵𝐴 = -∞) ↔ (¬ 0 < 𝐵 ∨ ¬ 𝐴 = -∞))
27 orcom 868 . . . . . . 7 ((¬ 0 < 𝐵 ∨ ¬ 𝐴 = -∞) ↔ (¬ 𝐴 = -∞ ∨ ¬ 0 < 𝐵))
2826, 27bitri 274 . . . . . 6 (¬ (0 < 𝐵𝐴 = -∞) ↔ (¬ 𝐴 = -∞ ∨ ¬ 0 < 𝐵))
2925, 28syl6ibr 251 . . . . 5 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ (0 < 𝐵𝐴 = -∞)))
3018con2d 134 . . . . . . . . 9 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (0 < 𝐵 → ¬ 𝐵 < 0))
3130adantrd 492 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((0 < 𝐵𝐴 = +∞) → ¬ 𝐵 < 0))
32 pnfnlt 13107 . . . . . . . . . . 11 (0 ∈ ℝ* → ¬ +∞ < 0)
337, 32ax-mp 5 . . . . . . . . . 10 ¬ +∞ < 0
34 simpr 485 . . . . . . . . . . 11 ((0 < 𝐴𝐵 = +∞) → 𝐵 = +∞)
3534breq1d 5158 . . . . . . . . . 10 ((0 < 𝐴𝐵 = +∞) → (𝐵 < 0 ↔ +∞ < 0))
3633, 35mtbiri 326 . . . . . . . . 9 ((0 < 𝐴𝐵 = +∞) → ¬ 𝐵 < 0)
3736a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((0 < 𝐴𝐵 = +∞) → ¬ 𝐵 < 0))
3831, 37jaod 857 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) → ¬ 𝐵 < 0))
394a1i 11 . . . . . . . . 9 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐴 = -∞ → ¬ 𝐴 = +∞))
4039adantld 491 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((𝐵 < 0 ∧ 𝐴 = -∞) → ¬ 𝐴 = +∞))
41 breq1 5151 . . . . . . . . . . . 12 (𝐴 = +∞ → (𝐴 < 0 ↔ +∞ < 0))
4233, 41mtbiri 326 . . . . . . . . . . 11 (𝐴 = +∞ → ¬ 𝐴 < 0)
4342con2i 139 . . . . . . . . . 10 (𝐴 < 0 → ¬ 𝐴 = +∞)
4443adantr 481 . . . . . . . . 9 ((𝐴 < 0 ∧ 𝐵 = -∞) → ¬ 𝐴 = +∞)
4544a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((𝐴 < 0 ∧ 𝐵 = -∞) → ¬ 𝐴 = +∞))
4640, 45jaod 857 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞)) → ¬ 𝐴 = +∞))
4738, 46orim12d 963 . . . . . 6 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ 𝐵 < 0 ∨ ¬ 𝐴 = +∞)))
48 ianor 980 . . . . . 6 (¬ (𝐵 < 0 ∧ 𝐴 = +∞) ↔ (¬ 𝐵 < 0 ∨ ¬ 𝐴 = +∞))
4947, 48syl6ibr 251 . . . . 5 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ (𝐵 < 0 ∧ 𝐴 = +∞)))
5029, 49jcad 513 . . . 4 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ (0 < 𝐵𝐴 = -∞) ∧ ¬ (𝐵 < 0 ∧ 𝐴 = +∞))))
51 ioran 982 . . . 4 (¬ ((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞)) ↔ (¬ (0 < 𝐵𝐴 = -∞) ∧ ¬ (𝐵 < 0 ∧ 𝐴 = +∞)))
5250, 51syl6ibr 251 . . 3 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ ((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞))))
5321con2i 139 . . . . . . . . . 10 (0 < 𝐵 → ¬ 𝐵 = -∞)
5453adantr 481 . . . . . . . . 9 ((0 < 𝐵𝐴 = +∞) → ¬ 𝐵 = -∞)
5554a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((0 < 𝐵𝐴 = +∞) → ¬ 𝐵 = -∞))
56 pnfnemnf 11268 . . . . . . . . . . 11 +∞ ≠ -∞
57 eqeq1 2736 . . . . . . . . . . . 12 (𝐵 = +∞ → (𝐵 = -∞ ↔ +∞ = -∞))
5857necon3bbid 2978 . . . . . . . . . . 11 (𝐵 = +∞ → (¬ 𝐵 = -∞ ↔ +∞ ≠ -∞))
5956, 58mpbiri 257 . . . . . . . . . 10 (𝐵 = +∞ → ¬ 𝐵 = -∞)
6059adantl 482 . . . . . . . . 9 ((0 < 𝐴𝐵 = +∞) → ¬ 𝐵 = -∞)
6160a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((0 < 𝐴𝐵 = +∞) → ¬ 𝐵 = -∞))
6255, 61jaod 857 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) → ¬ 𝐵 = -∞))
6311adantl 482 . . . . . . . . 9 ((𝐵 < 0 ∧ 𝐴 = -∞) → ¬ 0 < 𝐴)
6463a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((𝐵 < 0 ∧ 𝐴 = -∞) → ¬ 0 < 𝐴))
65 simpl 483 . . . . . . . . . 10 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → 𝐴 ∈ ℝ*)
66 xrltnsym 13115 . . . . . . . . . 10 ((𝐴 ∈ ℝ* ∧ 0 ∈ ℝ*) → (𝐴 < 0 → ¬ 0 < 𝐴))
6765, 7, 66sylancl 586 . . . . . . . . 9 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (𝐴 < 0 → ¬ 0 < 𝐴))
6867adantrd 492 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((𝐴 < 0 ∧ 𝐵 = -∞) → ¬ 0 < 𝐴))
6964, 68jaod 857 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞)) → ¬ 0 < 𝐴))
7062, 69orim12d 963 . . . . . 6 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ 𝐵 = -∞ ∨ ¬ 0 < 𝐴)))
71 ianor 980 . . . . . . 7 (¬ (0 < 𝐴𝐵 = -∞) ↔ (¬ 0 < 𝐴 ∨ ¬ 𝐵 = -∞))
72 orcom 868 . . . . . . 7 ((¬ 0 < 𝐴 ∨ ¬ 𝐵 = -∞) ↔ (¬ 𝐵 = -∞ ∨ ¬ 0 < 𝐴))
7371, 72bitri 274 . . . . . 6 (¬ (0 < 𝐴𝐵 = -∞) ↔ (¬ 𝐵 = -∞ ∨ ¬ 0 < 𝐴))
7470, 73syl6ibr 251 . . . . 5 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ (0 < 𝐴𝐵 = -∞)))
7542adantl 482 . . . . . . . . 9 ((0 < 𝐵𝐴 = +∞) → ¬ 𝐴 < 0)
7675a1i 11 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((0 < 𝐵𝐴 = +∞) → ¬ 𝐴 < 0))
7767con2d 134 . . . . . . . . 9 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (0 < 𝐴 → ¬ 𝐴 < 0))
7877adantrd 492 . . . . . . . 8 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((0 < 𝐴𝐵 = +∞) → ¬ 𝐴 < 0))
7976, 78jaod 857 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) → ¬ 𝐴 < 0))
80 breq1 5151 . . . . . . . . . . . 12 (𝐵 = +∞ → (𝐵 < 0 ↔ +∞ < 0))
8133, 80mtbiri 326 . . . . . . . . . . 11 (𝐵 = +∞ → ¬ 𝐵 < 0)
8281con2i 139 . . . . . . . . . 10 (𝐵 < 0 → ¬ 𝐵 = +∞)
8382adantr 481 . . . . . . . . 9 ((𝐵 < 0 ∧ 𝐴 = -∞) → ¬ 𝐵 = +∞)
8459con2i 139 . . . . . . . . . 10 (𝐵 = -∞ → ¬ 𝐵 = +∞)
8584adantl 482 . . . . . . . . 9 ((𝐴 < 0 ∧ 𝐵 = -∞) → ¬ 𝐵 = +∞)
8683, 85jaoi 855 . . . . . . . 8 (((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞)) → ¬ 𝐵 = +∞)
8786a1i 11 . . . . . . 7 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → (((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞)) → ¬ 𝐵 = +∞))
8879, 87orim12d 963 . . . . . 6 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ 𝐴 < 0 ∨ ¬ 𝐵 = +∞)))
89 ianor 980 . . . . . 6 (¬ (𝐴 < 0 ∧ 𝐵 = +∞) ↔ (¬ 𝐴 < 0 ∨ ¬ 𝐵 = +∞))
9088, 89syl6ibr 251 . . . . 5 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ (𝐴 < 0 ∧ 𝐵 = +∞)))
9174, 90jcad 513 . . . 4 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ (0 < 𝐴𝐵 = -∞) ∧ ¬ (𝐴 < 0 ∧ 𝐵 = +∞))))
92 ioran 982 . . . 4 (¬ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞)) ↔ (¬ (0 < 𝐴𝐵 = -∞) ∧ ¬ (𝐴 < 0 ∧ 𝐵 = +∞)))
9391, 92syl6ibr 251 . . 3 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞))))
9452, 93jcad 513 . 2 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → (¬ ((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞)) ∧ ¬ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞)))))
95 or4 925 . 2 ((((0 < 𝐵𝐴 = +∞) ∨ (𝐵 < 0 ∧ 𝐴 = -∞)) ∨ ((0 < 𝐴𝐵 = +∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) ↔ (((0 < 𝐵𝐴 = +∞) ∨ (0 < 𝐴𝐵 = +∞)) ∨ ((𝐵 < 0 ∧ 𝐴 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))))
96 ioran 982 . 2 (¬ (((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞)) ∨ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞))) ↔ (¬ ((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞)) ∧ ¬ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞))))
9794, 95, 963imtr4g 295 1 ((𝐴 ∈ ℝ*𝐵 ∈ ℝ*) → ((((0 < 𝐵𝐴 = +∞) ∨ (𝐵 < 0 ∧ 𝐴 = -∞)) ∨ ((0 < 𝐴𝐵 = +∞) ∨ (𝐴 < 0 ∧ 𝐵 = -∞))) → ¬ (((0 < 𝐵𝐴 = -∞) ∨ (𝐵 < 0 ∧ 𝐴 = +∞)) ∨ ((0 < 𝐴𝐵 = -∞) ∨ (𝐴 < 0 ∧ 𝐵 = +∞)))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 396  wo 845   = wceq 1541  wcel 2106  wne 2940   class class class wbr 5148  0cc0 11109  +∞cpnf 11244  -∞cmnf 11245  *cxr 11246   < clt 11247
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2703  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7724  ax-cnex 11165  ax-resscn 11166  ax-1cn 11167  ax-addrcl 11170  ax-rnegex 11180  ax-cnre 11182  ax-pre-lttri 11183  ax-pre-lttrn 11184
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2534  df-eu 2563  df-clab 2710  df-cleq 2724  df-clel 2810  df-nfc 2885  df-ne 2941  df-nel 3047  df-ral 3062  df-rex 3071  df-rab 3433  df-v 3476  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-br 5149  df-opab 5211  df-mpt 5232  df-id 5574  df-po 5588  df-so 5589  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-iota 6495  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-er 8702  df-en 8939  df-dom 8940  df-sdom 8941  df-pnf 11249  df-mnf 11250  df-xr 11251  df-ltxr 11252
This theorem is referenced by:  xmulneg1  13247
  Copyright terms: Public domain W3C validator