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| Description: Define Euler's constant 2.71828.... |
| Ref | Expression |
|---|---|
| df-e |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ceu 7486 |
. 2
| |
| 2 | c1 5380 |
. . 3
| |
| 3 | ce 7485 |
. . 3
| |
| 4 | 2, 3 | cfv 3260 |
. 2
|
| 5 | 1, 4 | wceq 989 |
1
|
| Colors of variables: wff set class |
| This definition is referenced by: eval 7501 ere 7522 efnn0val 7565 eirrlem5 7585 loge 9017 |