Description: The sum of two positive reals is greater than one of them. (Contributed by NM, 13-May-1996) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | ltaddpr2 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq1 | |
|
2 | dmplp | |
|
3 | 0npr | |
|
4 | 2 3 | ndmovrcl | |
5 | 1 4 | syl6bir | |
6 | ltaddpr | |
|
7 | breq2 | |
|
8 | 6 7 | syl5ib | |
9 | 5 8 | syldc | |