coseq0negpitopi - Intuitionistic Logic Explorer

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Theorem coseq0negpitopi 14342

Description: Location of the zeroes of cosine in (-π(,]π). (Contributed by David Moews, 28-Feb-2017.)

**Assertion**
Ref	Expression
coseq0negpitopi	⊢ (𝐴 ∈ (-π(,]π) → ((cos‘𝐴) = 0 ↔ 𝐴 ∈ {(π / 2), -(π / 2)}))

**Proof of Theorem coseq0negpitopi**
Step	Hyp	Ref	Expression
1		simplr 528	. . . . 5 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → (cos‘𝐴) = 0)
2		pire 14292	. . . . . . . . . . . . 13 ⊢ π ∈ ℝ
3	2	renegcli 8221	. . . . . . . . . . . 12 ⊢ -π ∈ ℝ
4	3	rexri 8017	. . . . . . . . . . 11 ⊢ -π ∈ ℝ^*
5		elioc2 9938	. . . . . . . . . . 11 ⊢ ((-π ∈ ℝ^* ∧ π ∈ ℝ) → (𝐴 ∈ (-π(,]π) ↔ (𝐴 ∈ ℝ ∧ -π < 𝐴 ∧ 𝐴 ≤ π)))
6	4, 2, 5	mp2an 426	. . . . . . . . . 10 ⊢ (𝐴 ∈ (-π(,]π) ↔ (𝐴 ∈ ℝ ∧ -π < 𝐴 ∧ 𝐴 ≤ π))
7	6	simp1bi 1012	. . . . . . . . 9 ⊢ (𝐴 ∈ (-π(,]π) → 𝐴 ∈ ℝ)
8	7	adantr 276	. . . . . . . 8 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → 𝐴 ∈ ℝ)
9	8	adantr 276	. . . . . . 7 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → 𝐴 ∈ ℝ)
10		halfpire 14298	. . . . . . . . . 10 ⊢ (π / 2) ∈ ℝ
11	10	renegcli 8221	. . . . . . . . 9 ⊢ -(π / 2) ∈ ℝ
12	11	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → -(π / 2) ∈ ℝ)
13		4re 8998	. . . . . . . . . . 11 ⊢ 4 ∈ ℝ
14		4ap0 9020	. . . . . . . . . . 11 ⊢ 4 # 0
15	2, 13, 14	redivclapi 8738	. . . . . . . . . 10 ⊢ (π / 4) ∈ ℝ
16	15	renegcli 8221	. . . . . . . . 9 ⊢ -(π / 4) ∈ ℝ
17	16	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → -(π / 4) ∈ ℝ)
18		2lt4 9094	. . . . . . . . . . 11 ⊢ 2 < 4
19		2re 8991	. . . . . . . . . . . . 13 ⊢ 2 ∈ ℝ
20		2pos 9012	. . . . . . . . . . . . 13 ⊢ 0 < 2
21	19, 20	pm3.2i 272	. . . . . . . . . . . 12 ⊢ (2 ∈ ℝ ∧ 0 < 2)
22		4pos 9018	. . . . . . . . . . . . 13 ⊢ 0 < 4
23	13, 22	pm3.2i 272	. . . . . . . . . . . 12 ⊢ (4 ∈ ℝ ∧ 0 < 4)
24		pipos 14294	. . . . . . . . . . . . 13 ⊢ 0 < π
25	2, 24	pm3.2i 272	. . . . . . . . . . . 12 ⊢ (π ∈ ℝ ∧ 0 < π)
26		ltdiv2 8846	. . . . . . . . . . . 12 ⊢ (((2 ∈ ℝ ∧ 0 < 2) ∧ (4 ∈ ℝ ∧ 0 < 4) ∧ (π ∈ ℝ ∧ 0 < π)) → (2 < 4 ↔ (π / 4) < (π / 2)))
27	21, 23, 25, 26	mp3an 1337	. . . . . . . . . . 11 ⊢ (2 < 4 ↔ (π / 4) < (π / 2))
28	18, 27	mpbi 145	. . . . . . . . . 10 ⊢ (π / 4) < (π / 2)
29	15, 10	ltnegi 8452	. . . . . . . . . 10 ⊢ ((π / 4) < (π / 2) ↔ -(π / 2) < -(π / 4))
30	28, 29	mpbi 145	. . . . . . . . 9 ⊢ -(π / 2) < -(π / 4)
31	30	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → -(π / 2) < -(π / 4))
32		simpr 110	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → -(π / 4) < 𝐴)
33	12, 17, 9, 31, 32	lttrd 8085	. . . . . . 7 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → -(π / 2) < 𝐴)
34	2	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → π ∈ ℝ)
35		3re 8995	. . . . . . . . . 10 ⊢ 3 ∈ ℝ
36	35, 10	remulcli 7973	. . . . . . . . 9 ⊢ (3 · (π / 2)) ∈ ℝ
37	36	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → (3 · (π / 2)) ∈ ℝ)
38	6	simp3bi 1014	. . . . . . . . 9 ⊢ (𝐴 ∈ (-π(,]π) → 𝐴 ≤ π)
39	38	ad2antrr 488	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → 𝐴 ≤ π)
40		2lt3 9091	. . . . . . . . . . 11 ⊢ 2 < 3
41		3pos 9015	. . . . . . . . . . . . 13 ⊢ 0 < 3
42	35, 41	pm3.2i 272	. . . . . . . . . . . 12 ⊢ (3 ∈ ℝ ∧ 0 < 3)
43		ltdiv2 8846	. . . . . . . . . . . 12 ⊢ (((2 ∈ ℝ ∧ 0 < 2) ∧ (3 ∈ ℝ ∧ 0 < 3) ∧ (π ∈ ℝ ∧ 0 < π)) → (2 < 3 ↔ (π / 3) < (π / 2)))
44	21, 42, 25, 43	mp3an 1337	. . . . . . . . . . 11 ⊢ (2 < 3 ↔ (π / 3) < (π / 2))
45	40, 44	mpbi 145	. . . . . . . . . 10 ⊢ (π / 3) < (π / 2)
46		ltdivmul 8835	. . . . . . . . . . 11 ⊢ ((π ∈ ℝ ∧ (π / 2) ∈ ℝ ∧ (3 ∈ ℝ ∧ 0 < 3)) → ((π / 3) < (π / 2) ↔ π < (3 · (π / 2))))
47	2, 10, 42, 46	mp3an 1337	. . . . . . . . . 10 ⊢ ((π / 3) < (π / 2) ↔ π < (3 · (π / 2)))
48	45, 47	mpbi 145	. . . . . . . . 9 ⊢ π < (3 · (π / 2))
49	48	a1i 9	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → π < (3 · (π / 2)))
50	9, 34, 37, 39, 49	lelttrd 8084	. . . . . . 7 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → 𝐴 < (3 · (π / 2)))
51	11	rexri 8017	. . . . . . . 8 ⊢ -(π / 2) ∈ ℝ^*
52	36	rexri 8017	. . . . . . . 8 ⊢ (3 · (π / 2)) ∈ ℝ^*
53		elioo2 9923	. . . . . . . 8 ⊢ ((-(π / 2) ∈ ℝ^* ∧ (3 · (π / 2)) ∈ ℝ^*) → (𝐴 ∈ (-(π / 2)(,)(3 · (π / 2))) ↔ (𝐴 ∈ ℝ ∧ -(π / 2) < 𝐴 ∧ 𝐴 < (3 · (π / 2)))))
54	51, 52, 53	mp2an 426	. . . . . . 7 ⊢ (𝐴 ∈ (-(π / 2)(,)(3 · (π / 2))) ↔ (𝐴 ∈ ℝ ∧ -(π / 2) < 𝐴 ∧ 𝐴 < (3 · (π / 2))))
55	9, 33, 50, 54	syl3anbrc 1181	. . . . . 6 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → 𝐴 ∈ (-(π / 2)(,)(3 · (π / 2))))
56		coseq0q4123 14340	. . . . . 6 ⊢ (𝐴 ∈ (-(π / 2)(,)(3 · (π / 2))) → ((cos‘𝐴) = 0 ↔ 𝐴 = (π / 2)))
57	55, 56	syl 14	. . . . 5 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → ((cos‘𝐴) = 0 ↔ 𝐴 = (π / 2)))
58	1, 57	mpbid 147	. . . 4 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → 𝐴 = (π / 2))
59		prid1g 3698	. . . . 5 ⊢ ((π / 2) ∈ ℝ → (π / 2) ∈ {(π / 2), -(π / 2)})
60		eleq1a 2249	. . . . 5 ⊢ ((π / 2) ∈ {(π / 2), -(π / 2)} → (𝐴 = (π / 2) → 𝐴 ∈ {(π / 2), -(π / 2)}))
61	10, 59, 60	mp2b 8	. . . 4 ⊢ (𝐴 = (π / 2) → 𝐴 ∈ {(π / 2), -(π / 2)})
62	58, 61	syl 14	. . 3 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ -(π / 4) < 𝐴) → 𝐴 ∈ {(π / 2), -(π / 2)})
63	8	recnd 7988	. . . . . . 7 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → 𝐴 ∈ ℂ)
64	63	adantr 276	. . . . . 6 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 𝐴 ∈ ℂ)
65		cosneg 11737	. . . . . . . . 9 ⊢ (𝐴 ∈ ℂ → (cos‘-𝐴) = (cos‘𝐴))
66	64, 65	syl 14	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → (cos‘-𝐴) = (cos‘𝐴))
67		simplr 528	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → (cos‘𝐴) = 0)
68	66, 67	eqtrd 2210	. . . . . . 7 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → (cos‘-𝐴) = 0)
69	8	renegcld 8339	. . . . . . . . . 10 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → -𝐴 ∈ ℝ)
70	69	adantr 276	. . . . . . . . 9 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → -𝐴 ∈ ℝ)
71		0re 7959	. . . . . . . . . . 11 ⊢ 0 ∈ ℝ
72	71	a1i 9	. . . . . . . . . 10 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 0 ∈ ℝ)
73		simpr 110	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 𝐴 < 0)
74	8	adantr 276	. . . . . . . . . . . 12 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 𝐴 ∈ ℝ)
75	74	lt0neg1d 8474	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → (𝐴 < 0 ↔ 0 < -𝐴))
76	73, 75	mpbid 147	. . . . . . . . . 10 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 0 < -𝐴)
77	72, 70, 76	ltled 8078	. . . . . . . . 9 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 0 ≤ -𝐴)
78	2	a1i 9	. . . . . . . . . 10 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → π ∈ ℝ)
79	2	a1i 9	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → π ∈ ℝ)
80	6	simp2bi 1013	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ (-π(,]π) → -π < 𝐴)
81	80	adantr 276	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → -π < 𝐴)
82	79, 8, 81	ltnegcon1d 8484	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → -𝐴 < π)
83	82	adantr 276	. . . . . . . . . 10 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → -𝐴 < π)
84	70, 78, 83	ltled 8078	. . . . . . . . 9 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → -𝐴 ≤ π)
85	71, 2	elicc2i 9941	. . . . . . . . 9 ⊢ (-𝐴 ∈ (0[,]π) ↔ (-𝐴 ∈ ℝ ∧ 0 ≤ -𝐴 ∧ -𝐴 ≤ π))
86	70, 77, 84, 85	syl3anbrc 1181	. . . . . . . 8 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → -𝐴 ∈ (0[,]π))
87		coseq00topi 14341	. . . . . . . 8 ⊢ (-𝐴 ∈ (0[,]π) → ((cos‘-𝐴) = 0 ↔ -𝐴 = (π / 2)))
88	86, 87	syl 14	. . . . . . 7 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → ((cos‘-𝐴) = 0 ↔ -𝐴 = (π / 2)))
89	68, 88	mpbid 147	. . . . . 6 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → -𝐴 = (π / 2))
90	64, 89	negcon1ad 8265	. . . . 5 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → -(π / 2) = 𝐴)
91	90	eqcomd 2183	. . . 4 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 𝐴 = -(π / 2))
92		prid2g 3699	. . . . 5 ⊢ (-(π / 2) ∈ ℝ → -(π / 2) ∈ {(π / 2), -(π / 2)})
93		eleq1a 2249	. . . . 5 ⊢ (-(π / 2) ∈ {(π / 2), -(π / 2)} → (𝐴 = -(π / 2) → 𝐴 ∈ {(π / 2), -(π / 2)}))
94	11, 92, 93	mp2b 8	. . . 4 ⊢ (𝐴 = -(π / 2) → 𝐴 ∈ {(π / 2), -(π / 2)})
95	91, 94	syl 14	. . 3 ⊢ (((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) ∧ 𝐴 < 0) → 𝐴 ∈ {(π / 2), -(π / 2)})
96		pirp 14295	. . . . . . 7 ⊢ π ∈ ℝ⁺
97	13, 22	elrpii 9658	. . . . . . 7 ⊢ 4 ∈ ℝ⁺
98		rpdivcl 9681	. . . . . . 7 ⊢ ((π ∈ ℝ⁺ ∧ 4 ∈ ℝ⁺) → (π / 4) ∈ ℝ⁺)
99	96, 97, 98	mp2an 426	. . . . . 6 ⊢ (π / 4) ∈ ℝ⁺
100		rpgt0 9667	. . . . . 6 ⊢ ((π / 4) ∈ ℝ⁺ → 0 < (π / 4))
101	99, 100	ax-mp 5	. . . . 5 ⊢ 0 < (π / 4)
102		lt0neg2 8428	. . . . . 6 ⊢ ((π / 4) ∈ ℝ → (0 < (π / 4) ↔ -(π / 4) < 0))
103	15, 102	ax-mp 5	. . . . 5 ⊢ (0 < (π / 4) ↔ -(π / 4) < 0)
104	101, 103	mpbi 145	. . . 4 ⊢ -(π / 4) < 0
105		axltwlin 8027	. . . . 5 ⊢ ((-(π / 4) ∈ ℝ ∧ 0 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (-(π / 4) < 0 → (-(π / 4) < 𝐴 ∨ 𝐴 < 0)))
106	16, 71, 8, 105	mp3an12i 1341	. . . 4 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → (-(π / 4) < 0 → (-(π / 4) < 𝐴 ∨ 𝐴 < 0)))
107	104, 106	mpi 15	. . 3 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → (-(π / 4) < 𝐴 ∨ 𝐴 < 0))
108	62, 95, 107	mpjaodan 798	. 2 ⊢ ((𝐴 ∈ (-π(,]π) ∧ (cos‘𝐴) = 0) → 𝐴 ∈ {(π / 2), -(π / 2)})
109		elpri 3617	. . . 4 ⊢ (𝐴 ∈ {(π / 2), -(π / 2)} → (𝐴 = (π / 2) ∨ 𝐴 = -(π / 2)))
110		fveq2 5517	. . . . . 6 ⊢ (𝐴 = (π / 2) → (cos‘𝐴) = (cos‘(π / 2)))
111		coshalfpi 14303	. . . . . 6 ⊢ (cos‘(π / 2)) = 0
112	110, 111	eqtrdi 2226	. . . . 5 ⊢ (𝐴 = (π / 2) → (cos‘𝐴) = 0)
113		fveq2 5517	. . . . . 6 ⊢ (𝐴 = -(π / 2) → (cos‘𝐴) = (cos‘-(π / 2)))
114		cosneghalfpi 14304	. . . . . 6 ⊢ (cos‘-(π / 2)) = 0
115	113, 114	eqtrdi 2226	. . . . 5 ⊢ (𝐴 = -(π / 2) → (cos‘𝐴) = 0)
116	112, 115	jaoi 716	. . . 4 ⊢ ((𝐴 = (π / 2) ∨ 𝐴 = -(π / 2)) → (cos‘𝐴) = 0)
117	109, 116	syl 14	. . 3 ⊢ (𝐴 ∈ {(π / 2), -(π / 2)} → (cos‘𝐴) = 0)
118	117	adantl 277	. 2 ⊢ ((𝐴 ∈ (-π(,]π) ∧ 𝐴 ∈ {(π / 2), -(π / 2)}) → (cos‘𝐴) = 0)
119	108, 118	impbida 596	1 ⊢ (𝐴 ∈ (-π(,]π) → ((cos‘𝐴) = 0 ↔ 𝐴 ∈ {(π / 2), -(π / 2)}))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 708 ∧ w3a 978 = wceq 1353 ∈ wcel 2148 {cpr 3595 class class class wbr 4005 ‘cfv 5218 (class class class)co 5877 ℂcc 7811 ℝcr 7812 0cc0 7813 · cmul 7818 ℝ^*cxr 7993 < clt 7994 ≤ cle 7995 -cneg 8131 / cdiv 8631 2c2 8972 3c3 8973 4c4 8974 ℝ⁺crp 9655 (,)cioo 9890 (,]cioc 9891 [,]cicc 9893 cosccos 11655 πcpi 11657

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4120 ax-sep 4123 ax-nul 4131 ax-pow 4176 ax-pr 4211 ax-un 4435 ax-setind 4538 ax-iinf 4589 ax-cnex 7904 ax-resscn 7905 ax-1cn 7906 ax-1re 7907 ax-icn 7908 ax-addcl 7909 ax-addrcl 7910 ax-mulcl 7911 ax-mulrcl 7912 ax-addcom 7913 ax-mulcom 7914 ax-addass 7915 ax-mulass 7916 ax-distr 7917 ax-i2m1 7918 ax-0lt1 7919 ax-1rid 7920 ax-0id 7921 ax-rnegex 7922 ax-precex 7923 ax-cnre 7924 ax-pre-ltirr 7925 ax-pre-ltwlin 7926 ax-pre-lttrn 7927 ax-pre-apti 7928 ax-pre-ltadd 7929 ax-pre-mulgt0 7930 ax-pre-mulext 7931 ax-arch 7932 ax-caucvg 7933 ax-pre-suploc 7934 ax-addf 7935 ax-mulf 7936

This theorem depends on definitions: df-bi 117 df-stab 831 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2741 df-sbc 2965 df-csb 3060 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-nul 3425 df-if 3537 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-int 3847 df-iun 3890 df-disj 3983 df-br 4006 df-opab 4067 df-mpt 4068 df-tr 4104 df-id 4295 df-po 4298 df-iso 4299 df-iord 4368 df-on 4370 df-ilim 4371 df-suc 4373 df-iom 4592 df-xp 4634 df-rel 4635 df-cnv 4636 df-co 4637 df-dm 4638 df-rn 4639 df-res 4640 df-ima 4641 df-iota 5180 df-fun 5220 df-fn 5221 df-f 5222 df-f1 5223 df-fo 5224 df-f1o 5225 df-fv 5226 df-isom 5227 df-riota 5833 df-ov 5880 df-oprab 5881 df-mpo 5882 df-of 6085 df-1st 6143 df-2nd 6144 df-recs 6308 df-irdg 6373 df-frec 6394 df-1o 6419 df-oadd 6423 df-er 6537 df-map 6652 df-pm 6653 df-en 6743 df-dom 6744 df-fin 6745 df-sup 6985 df-inf 6986 df-pnf 7996 df-mnf 7997 df-xr 7998 df-ltxr 7999 df-le 8000 df-sub 8132 df-neg 8133 df-reap 8534 df-ap 8541 df-div 8632 df-inn 8922 df-2 8980 df-3 8981 df-4 8982 df-5 8983 df-6 8984 df-7 8985 df-8 8986 df-9 8987 df-n0 9179 df-z 9256 df-uz 9531 df-q 9622 df-rp 9656 df-xneg 9774 df-xadd 9775 df-ioo 9894 df-ioc 9895 df-ico 9896 df-icc 9897 df-fz 10011 df-fzo 10145 df-seqfrec 10448 df-exp 10522 df-fac 10708 df-bc 10730 df-ihash 10758 df-shft 10826 df-cj 10853 df-re 10854 df-im 10855 df-rsqrt 11009 df-abs 11010 df-clim 11289 df-sumdc 11364 df-ef 11658 df-sin 11660 df-cos 11661 df-pi 11663 df-rest 12695 df-topgen 12714 df-psmet 13532 df-xmet 13533 df-met 13534 df-bl 13535 df-mopn 13536 df-top 13583 df-topon 13596 df-bases 13628 df-ntr 13681 df-cn 13773 df-cnp 13774 df-tx 13838 df-cncf 14143 df-limced 14210 df-dvap 14211

This theorem is referenced by: (None)

W3C validator