Description: Every solution of the equation A * X = B for matrices A and B is a matrix. (Contributed by AV, 10-Feb-2019)
Ref | Expression | ||
---|---|---|---|
Hypotheses | mamudm.e | |
|
mamudm.b | |
||
mamudm.f | |
||
mamudm.c | |
||
mamudm.m | |
||
mamufacex.g | |
||
mamufacex.d | |
||
Assertion | mamufacex | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mamudm.e | |
|
2 | mamudm.b | |
|
3 | mamudm.f | |
|
4 | mamudm.c | |
|
5 | mamudm.m | |
|
6 | mamufacex.g | |
|
7 | mamufacex.d | |
|
8 | 2a1 | |
|
9 | 1 2 3 4 5 | mamudm | |
10 | 9 | adantlr | |
11 | 10 | 3adant1 | |
12 | simpl | |
|
13 | 12 | intnand | |
14 | ndmovg | |
|
15 | 11 13 14 | syl2an2 | |
16 | eqeq1 | |
|
17 | xpfi | |
|
18 | 17 | 3adant2 | |
19 | xpnz | |
|
20 | 19 | biimpi | |
21 | eqid | |
|
22 | 6 21 7 | elfrlmbasn0 | |
23 | 18 20 22 | syl2an | |
24 | 23 | ex | |
25 | 24 | com13 | |
26 | 25 | adantl | |
27 | 26 | 3imp21 | |
28 | eqneqall | |
|
29 | 27 28 | syl5com | |
30 | 29 | adantl | |
31 | 30 | com12 | |
32 | 31 | eqcoms | |
33 | 16 32 | syl6bi | |
34 | 33 | com23 | |
35 | 15 34 | mpcom | |
36 | 35 | ex | |
37 | 8 36 | pm2.61i | |