mulneg12 - Intuitionistic Logic Explorer

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Theorem mulneg12 8383

Description: Swap the negative sign in a product. (Contributed by NM, 30-Jul-2004.)

**Assertion**
Ref	Expression
mulneg12	$/\$

**Proof of Theorem mulneg12**
Step	Hyp	Ref	Expression
1		mulneg1 8381	. 2 $/\$
2		mulneg2 8382	. 2 $/\$
3	1, 2	eqtr4d 2225	1 $/\$

Colors of variables: wff set class

Syntax hints:

wi 4 $/\$ wa 104

wceq 1364

wcel 2160 (class class class)co 5895

cc 7838

cmul 7845

cneg 8158

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 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-14 2163 ax-ext 2171 ax-sep 4136 ax-pow 4192 ax-pr 4227 ax-setind 4554 ax-resscn 7932 ax-1cn 7933 ax-icn 7935 ax-addcl 7936 ax-addrcl 7937 ax-mulcl 7938 ax-addcom 7940 ax-mulcom 7941 ax-addass 7942 ax-distr 7944 ax-i2m1 7945 ax-0id 7948 ax-rnegex 7949 ax-cnre 7951

This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-ral 2473 df-rex 2474 df-reu 2475 df-rab 2477 df-v 2754 df-sbc 2978 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-br 4019 df-opab 4080 df-id 4311 df-xp 4650 df-rel 4651 df-cnv 4652 df-co 4653 df-dm 4654 df-iota 5196 df-fun 5237 df-fv 5243 df-riota 5851 df-ov 5898 df-oprab 5899 df-mpo 5900 df-sub 8159 df-neg 8160

This theorem is referenced by: mul2neg 8384 crim 10898 efi4p 11756 sinneg 11765 cosneg 11766 efmival 11772 negdvdsb 11845 divalglemex 11958 bezoutlemaz 12035 bezoutlembz 12036 dvrecap 14629