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Theorem pythagtriplem13 12807

Description: Lemma for pythagtrip 12814. Show that

(which will eventually be closely related to the

in the final statement) is a natural. (Contributed by Scott Fenton, 17-Apr-2014.) (Revised by Mario Carneiro, 19-Apr-2014.)

**Hypothesis**
Ref	Expression
pythagtriplem13.1

**Assertion**
Ref	Expression
pythagtriplem13	$/\$ $/\$ $/\$ $/\$ $/\$

**Proof of Theorem pythagtriplem13**
Step	Hyp	Ref	Expression
1		pythagtriplem13.1	. 2
2		pythagtriplem9 12804	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
3	2	nnzd 9576	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
4		simp3r 1050	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$
5		2z 9482	. . . . . . . . . 10
6		simp3 1023	. . . . . . . . . . . . 13 $/\$ $/\$
7		simp2 1022	. . . . . . . . . . . . 13 $/\$ $/\$
8	6, 7	nnaddcld 9166	. . . . . . . . . . . 12 $/\$ $/\$
9	8	nnzd 9576	. . . . . . . . . . 11 $/\$ $/\$
10	9	3ad2ant1 1042	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
11		nnz 9473	. . . . . . . . . . . 12
12	11	3ad2ant1 1042	. . . . . . . . . . 11 $/\$ $/\$
13	12	3ad2ant1 1042	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
14		dvdsgcdb 12542	. . . . . . . . . 10 $/\$ $/\$ $/\$
15	5, 10, 13, 14	mp3an2i 1376	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
16	15	biimpar 297	. . . . . . . 8 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
17	16	simprd 114	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
18	4, 17	mtand 669	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
19		pythagtriplem7 12802	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$
20	19	breq2d 4095	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
21	18, 20	mtbird 677	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
22		pythagtriplem8 12803	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
23	22	nnzd 9576	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
24		nnz 9473	. . . . . . . . . . . . 13
25	24	3ad2ant3 1044	. . . . . . . . . . . 12 $/\$ $/\$
26		nnz 9473	. . . . . . . . . . . . 13
27	26	3ad2ant2 1043	. . . . . . . . . . . 12 $/\$ $/\$
28	25, 27	zsubcld 9582	. . . . . . . . . . 11 $/\$ $/\$
29	28	3ad2ant1 1042	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
30		dvdsgcdb 12542	. . . . . . . . . 10 $/\$ $/\$ $/\$
31	5, 29, 13, 30	mp3an2i 1376	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
32	31	biimpar 297	. . . . . . . 8 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
33	32	simprd 114	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$ $/\$
34	4, 33	mtand 669	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
35		pythagtriplem6 12801	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$
36	35	breq2d 4095	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
37	34, 36	mtbird 677	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
38		omoe 12415	. . . . 5 $/\$ $/\$ $/\$
39	3, 21, 23, 37, 38	syl22anc 1272	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
40	28	zred 9577	. . . . . . . . . 10 $/\$ $/\$
41	40	3ad2ant1 1042	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
42		simp13 1053	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
43	42	nnred 9131	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
44	8	nnred 9131	. . . . . . . . . 10 $/\$ $/\$
45	44	3ad2ant1 1042	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
46		nnrp 9867	. . . . . . . . . . . 12
47	46	3ad2ant2 1043	. . . . . . . . . . 11 $/\$ $/\$
48	47	3ad2ant1 1042	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
49	43, 48	ltsubrpd 9933	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
50		nngt0 9143	. . . . . . . . . . . 12
51	50	3ad2ant2 1043	. . . . . . . . . . 11 $/\$ $/\$
52	51	3ad2ant1 1042	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
53		simp12 1052	. . . . . . . . . . . 12 $/\$ $/\$ $/\$ $/\$ $/\$
54	53	nnred 9131	. . . . . . . . . . 11 $/\$ $/\$ $/\$ $/\$ $/\$
55	54, 43	ltaddposd 8684	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
56	52, 55	mpbid 147	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
57	41, 43, 45, 49, 56	lttrd 8280	. . . . . . . 8 $/\$ $/\$ $/\$ $/\$ $/\$
58		pythagtriplem10 12800	. . . . . . . . . . 11 $/\$ $/\$ $/\$
59	58	3adant3 1041	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
60		0re 8154	. . . . . . . . . . 11
61		ltle 8242	. . . . . . . . . . 11 $/\$
62	60, 61	mpan 424	. . . . . . . . . 10
63	41, 59, 62	sylc 62	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
64		nngt0 9143	. . . . . . . . . . . . 13
65	64	3ad2ant3 1044	. . . . . . . . . . . 12 $/\$ $/\$
66	65	3ad2ant1 1042	. . . . . . . . . . 11 $/\$ $/\$ $/\$ $/\$ $/\$
67	43, 54, 66, 52	addgt0d 8676	. . . . . . . . . 10 $/\$ $/\$ $/\$ $/\$ $/\$
68		ltle 8242	. . . . . . . . . . 11 $/\$
69	60, 68	mpan 424	. . . . . . . . . 10
70	45, 67, 69	sylc 62	. . . . . . . . 9 $/\$ $/\$ $/\$ $/\$ $/\$
71	41, 63, 45, 70	sqrtltd 11691	. . . . . . . 8 $/\$ $/\$ $/\$ $/\$ $/\$
72	57, 71	mpbid 147	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$
73		nnsub 9157	. . . . . . . 8 $/\$
74	22, 2, 73	syl2anc 411	. . . . . . 7 $/\$ $/\$ $/\$ $/\$ $/\$
75	72, 74	mpbid 147	. . . . . 6 $/\$ $/\$ $/\$ $/\$ $/\$
76	75	nnzd 9576	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
77		evend2 12408	. . . . 5
78	76, 77	syl 14	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
79	39, 78	mpbid 147	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
80	75	nngt0d 9162	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
81	75	nnred 9131	. . . . 5 $/\$ $/\$ $/\$ $/\$ $/\$
82		halfpos2 9349	. . . . 5
83	81, 82	syl 14	. . . 4 $/\$ $/\$ $/\$ $/\$ $/\$
84	80, 83	mpbid 147	. . 3 $/\$ $/\$ $/\$ $/\$ $/\$
85		elnnz 9464	. . 3 $/\$
86	79, 84, 85	sylanbrc 417	. 2 $/\$ $/\$ $/\$ $/\$ $/\$
87	1, 86	eqeltrid 2316	1 $/\$ $/\$ $/\$ $/\$ $/\$

Colors of variables: wff set class

Syntax hints:

wn 3

wi 4 $/\$ wa 104

wb 105 $/\$ w3a 1002

wceq 1395

wcel 2200 class class class wbr 4083

cfv 5318 (class class class)co 6007

cr 8006

cc0 8007

c1 8008

caddc 8010

clt 8189

cle 8190

cmin 8325

cdiv 8827

cn 9118

c2 9169

cz 9454

crp 9857

cexp 10768

csqrt 11515

cdvds 12306

cgcd 12482

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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4199 ax-sep 4202 ax-nul 4210 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 ax-iinf 4680 ax-cnex 8098 ax-resscn 8099 ax-1cn 8100 ax-1re 8101 ax-icn 8102 ax-addcl 8103 ax-addrcl 8104 ax-mulcl 8105 ax-mulrcl 8106 ax-addcom 8107 ax-mulcom 8108 ax-addass 8109 ax-mulass 8110 ax-distr 8111 ax-i2m1 8112 ax-0lt1 8113 ax-1rid 8114 ax-0id 8115 ax-rnegex 8116 ax-precex 8117 ax-cnre 8118 ax-pre-ltirr 8119 ax-pre-ltwlin 8120 ax-pre-lttrn 8121 ax-pre-apti 8122 ax-pre-ltadd 8123 ax-pre-mulgt0 8124 ax-pre-mulext 8125 ax-arch 8126 ax-caucvg 8127

This theorem depends on definitions: df-bi 117 df-stab 836 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-xor 1418 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-if 3603 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-iun 3967 df-br 4084 df-opab 4146 df-mpt 4147 df-tr 4183 df-id 4384 df-po 4387 df-iso 4388 df-iord 4457 df-on 4459 df-ilim 4460 df-suc 4462 df-iom 4683 df-xp 4725 df-rel 4726 df-cnv 4727 df-co 4728 df-dm 4729 df-rn 4730 df-res 4731 df-ima 4732 df-iota 5278 df-fun 5320 df-fn 5321 df-f 5322 df-f1 5323 df-fo 5324 df-f1o 5325 df-fv 5326 df-riota 5960 df-ov 6010 df-oprab 6011 df-mpo 6012 df-1st 6292 df-2nd 6293 df-recs 6457 df-frec 6543 df-1o 6568 df-2o 6569 df-er 6688 df-en 6896 df-sup 7159 df-pnf 8191 df-mnf 8192 df-xr 8193 df-ltxr 8194 df-le 8195 df-sub 8327 df-neg 8328 df-reap 8730 df-ap 8737 df-div 8828 df-inn 9119 df-2 9177 df-3 9178 df-4 9179 df-n0 9378 df-z 9455 df-uz 9731 df-q 9823 df-rp 9858 df-fz 10213 df-fzo 10347 df-fl 10498 df-mod 10553 df-seqfrec 10678 df-exp 10769 df-cj 11361 df-re 11362 df-im 11363 df-rsqrt 11517 df-abs 11518 df-dvds 12307 df-gcd 12483 df-prm 12638

This theorem is referenced by: pythagtriplem18 12812

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