Bump functionW
Bump function
Critical point (mathematics)W
Critical point (mathematics)
Differentiable functionW
Differentiable function
Flat functionW
Flat function
Immersion (mathematics)W
Immersion (mathematics)
MollifierW
Mollifier
Pushforward (differential)W
Pushforward (differential)
Schwartz spaceW
Schwartz space
SmoothnessW
Smoothness
SmoothnessW
Smoothness