10,636 reputation
2527
bio website
location
age
visits member for 1 year, 6 months
seen 2 days ago

University of Florence


Jul
12
revised Is it differentiable?
added 895 characters in body
Jul
12
comment Is it differentiable?
@user157130 that's not the definition of derivative.
Jul
12
comment Is it differentiable?
To have a chord passing through $(0,f(0))$ you need to know what is $f(0)$.
Jul
12
answered Is it differentiable?
Jul
11
comment Spherical Sampling of Projected Disk
Are you speaking of a 2-dimensional disk in 3-dimensional space?
Jul
11
answered Does the absence of horizontal lines shows that there are no $n,m\in \mathbb{N}$ such that $n^2=2m^2$?
Jul
11
answered How to calculate the length of a cubic hermite spline between two points
Jul
11
answered Differential Equation Word Problem
Jul
11
answered Find a weak derivative of this function
Jul
11
answered What will be probability of this problem?
Jul
11
answered is knot type invariant under diffeomorphism?
Jul
11
answered How to determine if two ellipse have at least one intersection point
Jul
11
answered If $A$ is compact and connected, then is $\Bbb R^2\setminus A$ connected?
Jul
10
revised How many pieces of information are needed to determine a triangle?
added 129 characters in body
Jul
10
answered How many pieces of information are needed to determine a triangle?
Jul
10
answered $f(x,y,z)$ must be equal at $(0,0,a)$ and $(0,0,-a)$ when $\nabla f(x,y,z)$ is always parallel to $(x,y,z)$
Jul
10
comment $f(x,y,z)$ must be equal at $(0,0,a)$ and $(0,0,-a)$ when $\nabla f(x,y,z)$ is always parallel to $(x,y,z)$
the gradient is in the title but not in the exercise
Jul
7
answered Product of Connected Spaces (2)
Jul
7
revised Product of Connected Spaces (2)
texified
Jul
7
awarded  Generalist