| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > sstr | Unicode version | ||
| Description: Transitivity of subclasses. Theorem 6 of [Suppes] p. 23. (Contributed by NM, 5-Sep-2003.) |
| Ref | Expression |
|---|---|
| sstr |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sstr2 3234 |
. 2
| |
| 2 | 1 | imp 124 |
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 106 ax-ia2 107 ax-ia3 108 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3206 df-ss 3213 |
| This theorem is referenced by: sstrd 3237 sylan9ss 3240 ssdifss 3337 uneqin 3458 ssindif0im 3554 undifss 3575 ssrnres 5179 relrelss 5263 fco 5500 fssres 5512 ssimaex 5707 fcof 5832 tpostpos2 6430 smores 6457 pmss12g 6843 fidcenumlemr 7153 iccsupr 10200 fimaxq 11090 fsum2d 11995 fsumabs 12025 fprod2d 12183 tgval 13344 tgvalex 13345 subrngintm 14225 subrgintm 14256 ssnei 14874 opnneiss 14881 restdis 14907 tgcnp 14932 blssexps 15152 blssex 15153 mopni3 15207 metss 15217 metcnp3 15234 tgioo 15277 cncfmptid 15320 dvmptfsum 15448 plyss 15461 |
| Copyright terms: Public domain | W3C validator |