Theorem xleaddadd 9874

Description: Cancelling a factor of two in <_ (expressed as addition rather than as a factor to avoid extended real multiplication). (Contributed by Jim Kingdon, 18-Apr-2023.)

Assertion

Ref	Expression
xleaddadd	|- ( ( A e. RR* /\ B e. RR* ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )

Proof of Theorem xleaddadd

Step	Hyp	Ref	Expression
1		recn 7935	. . . . . . 7 |- ( A e. RR -> A e. CC )
2	1	adantl 277	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> A e. CC )
3	2	2timesd 9150	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( 2 x. A ) = ( A + A ) )
4		recn 7935	. . . . . . 7 |- ( B e. RR -> B e. CC )
5	4	ad2antlr 489	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> B e. CC )
6	5	2timesd 9150	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( 2 x. B ) = ( B + B ) )
7	3, 6	breq12d 4013	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( ( 2 x. A ) <_ ( 2 x. B ) <-> ( A + A ) <_ ( B + B ) ) )
8		simpr 110	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> A e. RR )
9		simplr 528	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> B e. RR )
10		2re 8978	. . . . . 6 |- 2 e. RR
11	10	a1i 9	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> 2 e. RR )
12		2pos 8999	. . . . . 6 |- 0 < 2
13	12	a1i 9	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> 0 < 2 )
14		lemul2 8803	. . . . 5 |- ( ( A e. RR /\ B e. RR /\ ( 2 e. RR /\ 0 < 2 ) ) -> ( A <_ B <-> ( 2 x. A ) <_ ( 2 x. B ) ) )
15	8, 9, 11, 13, 14	syl112anc 1242	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( A <_ B <-> ( 2 x. A ) <_ ( 2 x. B ) ) )
16	8, 8	rexaddd 9841	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( A +e A ) = ( A + A ) )
17	9, 9	rexaddd 9841	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( B +e B ) = ( B + B ) )
18	16, 17	breq12d 4013	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( ( A +e A ) <_ ( B +e B ) <-> ( A + A ) <_ ( B + B ) ) )
19	7, 15, 18	3bitr4d 220	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A e. RR ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
20		renepnf 7995	. . . . . . . 8 |- ( B e. RR -> B =/= +oo )
21	20	neneqd 2368	. . . . . . 7 |- ( B e. RR -> -. B = +oo )
22	21	ad2antlr 489	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> -. B = +oo )
23		xgepnf 9803	. . . . . . 7 |- ( B e. RR* -> ( +oo <_ B <-> B = +oo ) )
24	23	ad3antlr 493	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( +oo <_ B <-> B = +oo ) )
25	22, 24	mtbird 673	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> -. +oo <_ B )
26		breq1 4003	. . . . . 6 |- ( A = +oo -> ( A <_ B <-> +oo <_ B ) )
27	26	adantl 277	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( A <_ B <-> +oo <_ B ) )
28	25, 27	mtbird 673	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> -. A <_ B )
29		simplr 528	. . . . . . . . 9 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> B e. RR )
30	29, 29	rexaddd 9841	. . . . . . . 8 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( B +e B ) = ( B + B ) )
31	29, 29	readdcld 7977	. . . . . . . 8 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( B + B ) e. RR )
32	30, 31	eqeltrd 2254	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( B +e B ) e. RR )
33		renepnf 7995	. . . . . . . 8 |- ( ( B +e B ) e. RR -> ( B +e B ) =/= +oo )
34	33	neneqd 2368	. . . . . . 7 |- ( ( B +e B ) e. RR -> -. ( B +e B ) = +oo )
35	32, 34	syl 14	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> -. ( B +e B ) = +oo )
36		simpllr 534	. . . . . . . 8 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> B e. RR* )
37	36, 36	xaddcld 9871	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( B +e B ) e. RR* )
38		xgepnf 9803	. . . . . . 7 |- ( ( B +e B ) e. RR* -> ( +oo <_ ( B +e B ) <-> ( B +e B ) = +oo ) )
39	37, 38	syl 14	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( +oo <_ ( B +e B ) <-> ( B +e B ) = +oo ) )
40	35, 39	mtbird 673	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> -. +oo <_ ( B +e B ) )
41		simpr 110	. . . . . . . 8 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> A = +oo )
42	41, 41	oveq12d 5887	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( A +e A ) = ( +oo +e +oo ) )
43		pnfxr 8000	. . . . . . . 8 |- +oo e. RR*
44		pnfnemnf 8002	. . . . . . . 8 |- +oo =/= -oo
45		xaddpnf2 9834	. . . . . . . 8 |- ( ( +oo e. RR* /\ +oo =/= -oo ) -> ( +oo +e +oo ) = +oo )
46	43, 44, 45	mp2an 426	. . . . . . 7 |- ( +oo +e +oo ) = +oo
47	42, 46	eqtrdi 2226	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( A +e A ) = +oo )
48	47	breq1d 4010	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( ( A +e A ) <_ ( B +e B ) <-> +oo <_ ( B +e B ) ) )
49	40, 48	mtbird 673	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> -. ( A +e A ) <_ ( B +e B ) )
50	28, 49	2falsed 702	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = +oo ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
51		mnfle 9779	. . . . . 6 |- ( B e. RR* -> -oo <_ B )
52	51	ad3antlr 493	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> -oo <_ B )
53		breq1 4003	. . . . . 6 |- ( A = -oo -> ( A <_ B <-> -oo <_ B ) )
54	53	adantl 277	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( A <_ B <-> -oo <_ B ) )
55	52, 54	mpbird 167	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> A <_ B )
56		oveq1 5876	. . . . . . 7 |- ( A = -oo -> ( A +e A ) = ( -oo +e A ) )
57	56	adantl 277	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( A +e A ) = ( -oo +e A ) )
58		simplll 533	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> A e. RR* )
59		mnfnepnf 8003	. . . . . . . . 9 |- -oo =/= +oo
60		neeq1 2360	. . . . . . . . 9 |- ( A = -oo -> ( A =/= +oo <-> -oo =/= +oo ) )
61	59, 60	mpbiri 168	. . . . . . . 8 |- ( A = -oo -> A =/= +oo )
62	61	adantl 277	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> A =/= +oo )
63		xaddmnf2 9836	. . . . . . 7 |- ( ( A e. RR* /\ A =/= +oo ) -> ( -oo +e A ) = -oo )
64	58, 62, 63	syl2anc 411	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( -oo +e A ) = -oo )
65	57, 64	eqtrd 2210	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( A +e A ) = -oo )
66		simpr 110	. . . . . . . 8 |- ( ( A e. RR* /\ B e. RR* ) -> B e. RR* )
67	66, 66	xaddcld 9871	. . . . . . 7 |- ( ( A e. RR* /\ B e. RR* ) -> ( B +e B ) e. RR* )
68	67	ad2antrr 488	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( B +e B ) e. RR* )
69		mnfle 9779	. . . . . 6 |- ( ( B +e B ) e. RR* -> -oo <_ ( B +e B ) )
70	68, 69	syl 14	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> -oo <_ ( B +e B ) )
71	65, 70	eqbrtrd 4022	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( A +e A ) <_ ( B +e B ) )
72	55, 71	2thd 175	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) /\ A = -oo ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
73		elxr 9763	. . . . 5 |- ( A e. RR* <-> ( A e. RR \/ A = +oo \/ A = -oo ) )
74	73	biimpi 120	. . . 4 |- ( A e. RR* -> ( A e. RR \/ A = +oo \/ A = -oo ) )
75	74	ad2antrr 488	. . 3 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) -> ( A e. RR \/ A = +oo \/ A = -oo ) )
76	19, 50, 72, 75	mpjao3dan 1307	. 2 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B e. RR ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
77		pnfge 9776	. . . . 5 |- ( A e. RR* -> A <_ +oo )
78	77	ad2antrr 488	. . . 4 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> A <_ +oo )
79		breq2 4004	. . . . 5 |- ( B = +oo -> ( A <_ B <-> A <_ +oo ) )
80	79	adantl 277	. . . 4 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> ( A <_ B <-> A <_ +oo ) )
81	78, 80	mpbird 167	. . 3 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> A <_ B )
82		simpll 527	. . . . . 6 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> A e. RR* )
83	82, 82	xaddcld 9871	. . . . 5 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> ( A +e A ) e. RR* )
84		pnfge 9776	. . . . 5 |- ( ( A +e A ) e. RR* -> ( A +e A ) <_ +oo )
85	83, 84	syl 14	. . . 4 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> ( A +e A ) <_ +oo )
86		oveq1 5876	. . . . . 6 |- ( B = +oo -> ( B +e B ) = ( +oo +e B ) )
87		eleq1 2240	. . . . . . . 8 |- ( B = +oo -> ( B e. RR* <-> +oo e. RR* ) )
88	43, 87	mpbiri 168	. . . . . . 7 |- ( B = +oo -> B e. RR* )
89		neeq1 2360	. . . . . . . 8 |- ( B = +oo -> ( B =/= -oo <-> +oo =/= -oo ) )
90	44, 89	mpbiri 168	. . . . . . 7 |- ( B = +oo -> B =/= -oo )
91		xaddpnf2 9834	. . . . . . 7 |- ( ( B e. RR* /\ B =/= -oo ) -> ( +oo +e B ) = +oo )
92	88, 90, 91	syl2anc 411	. . . . . 6 |- ( B = +oo -> ( +oo +e B ) = +oo )
93	86, 92	eqtrd 2210	. . . . 5 |- ( B = +oo -> ( B +e B ) = +oo )
94	93	adantl 277	. . . 4 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> ( B +e B ) = +oo )
95	85, 94	breqtrrd 4028	. . 3 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> ( A +e A ) <_ ( B +e B ) )
96	81, 95	2thd 175	. 2 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = +oo ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
97		simpr 110	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> A e. RR )
98	97	renemnfd 7999	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> A =/= -oo )
99	98	neneqd 2368	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> -. A = -oo )
100		ngtmnft 9804	. . . . . . . . 9 |- ( A e. RR* -> ( A = -oo <-> -. -oo < A ) )
101		mnfxr 8004	. . . . . . . . . 10 |- -oo e. RR*
102		xrlenlt 8012	. . . . . . . . . 10 |- ( ( A e. RR* /\ -oo e. RR* ) -> ( A <_ -oo <-> -. -oo < A ) )
103	101, 102	mpan2 425	. . . . . . . . 9 |- ( A e. RR* -> ( A <_ -oo <-> -. -oo < A ) )
104	100, 103	bitr4d 191	. . . . . . . 8 |- ( A e. RR* -> ( A = -oo <-> A <_ -oo ) )
105	104	ad2antrr 488	. . . . . . 7 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( A = -oo <-> A <_ -oo ) )
106		breq2 4004	. . . . . . . 8 |- ( B = -oo -> ( A <_ B <-> A <_ -oo ) )
107	106	adantl 277	. . . . . . 7 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( A <_ B <-> A <_ -oo ) )
108	105, 107	bitr4d 191	. . . . . 6 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( A = -oo <-> A <_ B ) )
109	108	adantr 276	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( A = -oo <-> A <_ B ) )
110	99, 109	mtbid 672	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> -. A <_ B )
111	97, 97	rexaddd 9841	. . . . . . . 8 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( A +e A ) = ( A + A ) )
112	97, 97	readdcld 7977	. . . . . . . 8 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( A + A ) e. RR )
113	111, 112	eqeltrd 2254	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( A +e A ) e. RR )
114	113	renemnfd 7999	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( A +e A ) =/= -oo )
115	114	neneqd 2368	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> -. ( A +e A ) = -oo )
116		simpll 527	. . . . . . . . 9 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> A e. RR* )
117	116, 116	xaddcld 9871	. . . . . . . 8 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( A +e A ) e. RR* )
118		xrlenlt 8012	. . . . . . . . 9 |- ( ( ( A +e A ) e. RR* /\ -oo e. RR* ) -> ( ( A +e A ) <_ -oo <-> -. -oo < ( A +e A ) ) )
119	101, 118	mpan2 425	. . . . . . . 8 |- ( ( A +e A ) e. RR* -> ( ( A +e A ) <_ -oo <-> -. -oo < ( A +e A ) ) )
120	117, 119	syl 14	. . . . . . 7 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( ( A +e A ) <_ -oo <-> -. -oo < ( A +e A ) ) )
121		oveq2 5877	. . . . . . . . . 10 |- ( B = -oo -> ( B +e B ) = ( B +e -oo ) )
122		eleq1 2240	. . . . . . . . . . . 12 |- ( B = -oo -> ( B e. RR* <-> -oo e. RR* ) )
123	101, 122	mpbiri 168	. . . . . . . . . . 11 |- ( B = -oo -> B e. RR* )
124	90	necon2i 2403	. . . . . . . . . . 11 |- ( B = -oo -> B =/= +oo )
125		xaddmnf1 9835	. . . . . . . . . . 11 |- ( ( B e. RR* /\ B =/= +oo ) -> ( B +e -oo ) = -oo )
126	123, 124, 125	syl2anc 411	. . . . . . . . . 10 |- ( B = -oo -> ( B +e -oo ) = -oo )
127	121, 126	eqtrd 2210	. . . . . . . . 9 |- ( B = -oo -> ( B +e B ) = -oo )
128	127	adantl 277	. . . . . . . 8 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( B +e B ) = -oo )
129	128	breq2d 4012	. . . . . . 7 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( ( A +e A ) <_ ( B +e B ) <-> ( A +e A ) <_ -oo ) )
130		ngtmnft 9804	. . . . . . . 8 |- ( ( A +e A ) e. RR* -> ( ( A +e A ) = -oo <-> -. -oo < ( A +e A ) ) )
131	117, 130	syl 14	. . . . . . 7 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( ( A +e A ) = -oo <-> -. -oo < ( A +e A ) ) )
132	120, 129, 131	3bitr4rd 221	. . . . . 6 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( ( A +e A ) = -oo <-> ( A +e A ) <_ ( B +e B ) ) )
133	132	adantr 276	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( ( A +e A ) = -oo <-> ( A +e A ) <_ ( B +e B ) ) )
134	115, 133	mtbid 672	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> -. ( A +e A ) <_ ( B +e B ) )
135	110, 134	2falsed 702	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A e. RR ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
136	44	neii 2349	. . . . . 6 |- -. +oo = -oo
137		eqeq1 2184	. . . . . . 7 |- ( A = +oo -> ( A = -oo <-> +oo = -oo ) )
138	137	adantl 277	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> ( A = -oo <-> +oo = -oo ) )
139	136, 138	mtbiri 675	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> -. A = -oo )
140	108	adantr 276	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> ( A = -oo <-> A <_ B ) )
141	139, 140	mtbid 672	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> -. A <_ B )
142		simplll 533	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> A e. RR* )
143	139	neqned 2354	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> A =/= -oo )
144		xaddnemnf 9844	. . . . . . 7 |- ( ( ( A e. RR* /\ A =/= -oo ) /\ ( A e. RR* /\ A =/= -oo ) ) -> ( A +e A ) =/= -oo )
145	142, 143, 142, 143, 144	syl22anc 1239	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> ( A +e A ) =/= -oo )
146	145	neneqd 2368	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> -. ( A +e A ) = -oo )
147	132	adantr 276	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> ( ( A +e A ) = -oo <-> ( A +e A ) <_ ( B +e B ) ) )
148	146, 147	mtbid 672	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> -. ( A +e A ) <_ ( B +e B ) )
149	141, 148	2falsed 702	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = +oo ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
150	108	biimpa 296	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> A <_ B )
151		simplll 533	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> A e. RR* )
152	151, 151	xaddcld 9871	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> ( A +e A ) e. RR* )
153	152	xrleidd 9788	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> ( A +e A ) <_ ( A +e A ) )
154		simpr 110	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> A = -oo )
155		simplr 528	. . . . . . 7 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> B = -oo )
156	154, 155	eqtr4d 2213	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> A = B )
157	156, 156	oveq12d 5887	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> ( A +e A ) = ( B +e B ) )
158	153, 157	breqtrd 4026	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> ( A +e A ) <_ ( B +e B ) )
159	150, 158	2thd 175	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) /\ A = -oo ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
160	74	ad2antrr 488	. . 3 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( A e. RR \/ A = +oo \/ A = -oo ) )
161	135, 149, 159, 160	mpjao3dan 1307	. 2 |- ( ( ( A e. RR* /\ B e. RR* ) /\ B = -oo ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )
162		elxr 9763	. . . 4 |- ( B e. RR* <-> ( B e. RR \/ B = +oo \/ B = -oo ) )
163	162	biimpi 120	. . 3 |- ( B e. RR* -> ( B e. RR \/ B = +oo \/ B = -oo ) )
164	163	adantl 277	. 2 |- ( ( A e. RR* /\ B e. RR* ) -> ( B e. RR \/ B = +oo \/ B = -oo ) )
165	76, 96, 161, 164	mpjao3dan 1307	1 |- ( ( A e. RR* /\ B e. RR* ) -> ( A <_ B <-> ( A +e A ) <_ ( B +e B ) ) )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 104   <-> wb 105   \/ w3o 977   = wceq 1353   e. wcel 2148   =/= wne 2347   class class class wbr 4000  (class class class)co 5869   CCcc 7800   RRcr 7801   0cc0 7802   + caddc 7805   x. cmul 7807   +oocpnf 7979   -oocmnf 7980   RR*cxr 7981   < clt 7982   <_ cle 7983   2c2 8959   +ecxad 9757

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-sep 4118  ax-pow 4171  ax-pr 4206  ax-un 4430  ax-setind 4533  ax-cnex 7893  ax-resscn 7894  ax-1cn 7895  ax-1re 7896  ax-icn 7897  ax-addcl 7898  ax-addrcl 7899  ax-mulcl 7900  ax-mulrcl 7901  ax-addcom 7902  ax-mulcom 7903  ax-addass 7904  ax-mulass 7905  ax-distr 7906  ax-i2m1 7907  ax-0lt1 7908  ax-1rid 7909  ax-0id 7910  ax-rnegex 7911  ax-precex 7912  ax-cnre 7913  ax-pre-ltirr 7914  ax-pre-lttrn 7916  ax-pre-ltadd 7918  ax-pre-mulgt0 7919

This theorem depends on definitions:  df-bi 117  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-rab 2464  df-v 2739  df-sbc 2963  df-csb 3058  df-dif 3131  df-un 3133  df-in 3135  df-ss 3142  df-if 3535  df-pw 3576  df-sn 3597  df-pr 3598  df-op 3600  df-uni 3808  df-iun 3886  df-br 4001  df-opab 4062  df-mpt 4063  df-id 4290  df-xp 4629  df-rel 4630  df-cnv 4631  df-co 4632  df-dm 4633  df-rn 4634  df-res 4635  df-ima 4636  df-iota 5174  df-fun 5214  df-fn 5215  df-f 5216  df-fv 5220  df-riota 5825  df-ov 5872  df-oprab 5873  df-mpo 5874  df-1st 6135  df-2nd 6136  df-pnf 7984  df-mnf 7985  df-xr 7986  df-ltxr 7987  df-le 7988  df-sub 8120  df-neg 8121  df-2 8967  df-xadd 9760

This theorem is referenced by:  psmetge0  13498  xmetge0  13532