Theorem subne0ad 8597

Description: If the difference of two complex numbers is nonzero, they are unequal. Converse of subne0d 8595. Contrapositive of subeq0bd 8654. (Contributed by David Moews, 28-Feb-2017.)

Hypotheses

Ref	Expression
negidd.1	|- ( ph -> A e. CC )
pncand.2	|- ( ph -> B e. CC )
subne0ad.3	|- ( ph -> ( A - B ) =/= 0 )

Assertion

Ref	Expression
subne0ad	|- ( ph -> A =/= B )

Proof of Theorem subne0ad

Step	Hyp	Ref	Expression
1		subne0ad.3	. 2 |- ( ph -> ( A - B ) =/= 0 )
2		negidd.1	. . . 4 |- ( ph -> A e. CC )
3		pncand.2	. . . 4 |- ( ph -> B e. CC )
4	2, 3	subeq0ad 8596	. . 3 |- ( ph -> ( ( A - B ) = 0 <-> A = B ) )
5	4	necon3bid 2455	. 2 |- ( ph -> ( ( A - B ) =/= 0 <-> A =/= B ) )
6	1, 5	mpbid 147	1 |- ( ph -> A =/= B )

Syntax hints:   -> wi 4   e. wcel 2205   =/= wne 2414  (class class class)co 6052   CCcc 8127   0cc0 8129   - cmin 8446

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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-setind 4661  ax-resscn 8221  ax-1cn 8222  ax-icn 8224  ax-addcl 8225  ax-addrcl 8226  ax-mulcl 8227  ax-addcom 8229  ax-addass 8231  ax-distr 8233  ax-i2m1 8234  ax-0id 8237  ax-rnegex 8238  ax-cnre 8240

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3045  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-br 4112  df-opab 4174  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-iota 5314  df-fun 5356  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-sub 8448

This theorem is referenced by: (None)