Mathbox for Alan Sare |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > e2ebindALT | Structured version Visualization version Unicode version |
Description: Absorption of an existential quantifier of a double existential quantifier of non-distinct variables. The proof is derived by completeusersproof.c from User's Proof in VirtualDeductionProofs.txt. The User's Proof in html format is displayed in e2ebindVD 39148. (Contributed by Alan Sare, 11-Sep-2016.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
e2ebindALT |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | axc11n 2307 | . 2 | |
2 | nfe1 2027 | . . . 4 | |
3 | 2 | 19.9 2072 | . . 3 |
4 | excom 2042 | . . . 4 | |
5 | nfa1 2028 | . . . . . 6 | |
6 | id 22 | . . . . . . 7 | |
7 | biid 251 | . . . . . . . . 9 | |
8 | 7 | a1i 11 | . . . . . . . 8 |
9 | 8 | drex1 2327 | . . . . . . 7 |
10 | 6, 9 | syl 17 | . . . . . 6 |
11 | 5, 10 | alrimi 2082 | . . . . 5 |
12 | exbi 1773 | . . . . 5 | |
13 | 11, 12 | syl 17 | . . . 4 |
14 | bitr 745 | . . . . . 6 | |
15 | 14 | ex 450 | . . . . 5 |
16 | 15 | impcom 446 | . . . 4 |
17 | 4, 13, 16 | sylancr 695 | . . 3 |
18 | bitr3 342 | . . . 4 | |
19 | 18 | impcom 446 | . . 3 |
20 | 3, 17, 19 | sylancr 695 | . 2 |
21 | 1, 20 | syl 17 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wal 1481 wex 1704 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-ex 1705 df-nf 1710 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |