Description: Ordering property of addition on reals. Axiom 20 of 22 for real and complex numbers, derived from ZF set theory. Note: The more general version for extended reals is axltadd . This construction-dependent theorem should not be referenced directly; instead, use ax-pre-ltadd . (Contributed by NM, 11-May-1996) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | axpre-ltadd | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elreal | |
|
2 | elreal | |
|
3 | elreal | |
|
4 | breq1 | |
|
5 | oveq2 | |
|
6 | 5 | breq1d | |
7 | 4 6 | bibi12d | |
8 | breq2 | |
|
9 | oveq2 | |
|
10 | 9 | breq2d | |
11 | 8 10 | bibi12d | |
12 | oveq1 | |
|
13 | oveq1 | |
|
14 | 12 13 | breq12d | |
15 | 14 | bibi2d | |
16 | ltasr | |
|
17 | 16 | adantr | |
18 | ltresr | |
|
19 | 18 | a1i | |
20 | addresr | |
|
21 | addresr | |
|
22 | 20 21 | breqan12d | |
23 | 22 | anandis | |
24 | ltresr | |
|
25 | 23 24 | bitrdi | |
26 | 17 19 25 | 3bitr4d | |
27 | 26 | ancoms | |
28 | 27 | 3impa | |
29 | 1 2 3 7 11 15 28 | 3gencl | |
30 | 29 | biimpd | |