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Mirrors > Home > MPE Home > Th. List > df-neg | Structured version Visualization version Unicode version |
Description: Define the negative of a
number (unary minus). We use different symbols
for unary minus (![]() ![]() |
Ref | Expression |
---|---|
df-neg |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cA |
. . 3
![]() ![]() | |
2 | 1 | cneg 10267 |
. 2
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3 | cc0 9936 |
. . 3
![]() ![]() | |
4 | cmin 10266 |
. . 3
![]() ![]() | |
5 | 3, 1, 4 | co 6650 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() |
6 | 2, 5 | wceq 1483 |
1
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