| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > cnvimass | Unicode version | ||
| Description: A preimage under any class is included in the domain of the class. (Contributed by FL, 29-Jan-2007.) |
| Ref | Expression |
|---|---|
| cnvimass |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imassrn 5117 |
. 2
| |
| 2 | dfdm4 4953 |
. 2
| |
| 3 | 1, 2 | sseqtrri 3277 |
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-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 4233 ax-pow 4292 ax-pr 4327 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 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-ral 2527 df-rex 2528 df-v 2817 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-br 4115 df-opab 4177 df-xp 4760 df-cnv 4762 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 |
| This theorem is referenced by: fvimacnvi 5797 elpreima 5802 fconst4m 5909 fsuppeq 6460 fsuppeqg 6461 pw2f1odclem 7100 nn0supp 9569 fisumss 12103 fprodssdc 12301 1arith 13090 ghmpreima 14019 psrbagfi 14949 cnpnei 15210 cnclima 15214 cnntri 15215 cnntr 15216 cncnp 15221 cnrest2 15227 cndis 15232 txcnmpt 15264 txdis1cn 15269 hmeoimaf1o 15305 xmeter 15427 |
| Copyright terms: Public domain | W3C validator |