![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > difss | Unicode version |
Description: Subclass relationship for class difference. Exercise 14 of [TakeutiZaring] p. 22. (Contributed by NM, 29-Apr-1994.) |
Ref | Expression |
---|---|
difss |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eldifi 3203 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
2 | 1 | ssriv 3106 |
1
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Colors of variables: wff set class |
Syntax hints: ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-dif 3078 df-in 3082 df-ss 3089 |
This theorem is referenced by: difssd 3208 difss2 3209 ssdifss 3211 0dif 3439 undif1ss 3442 undifabs 3444 inundifss 3445 undifss 3448 unidif 3776 iunxdif2 3869 difexg 4077 reldif 4667 cnvdif 4953 resdif 5397 fndmdif 5533 swoer 6465 swoord1 6466 swoord2 6467 phplem2 6755 phpm 6767 unfiin 6822 sbthlem2 6854 sbthlemi4 6856 sbthlemi5 6857 difinfinf 6994 pinn 7141 niex 7144 dmaddpi 7157 dmmulpi 7158 lerelxr 7851 fisumss 11193 structcnvcnv 12014 strleund 12086 strleun 12087 strle1g 12088 discld 12344 exmid1stab 13368 |
Copyright terms: Public domain | W3C validator |