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University of Florence


Jul
20
comment (Dis)continuity of function in $R^2$
Ok, so $\wedge$ is an and not a min as I thought!... :-)
Jul
20
comment (Dis)continuity of function in $R^2$
I find it strange to write something like $A > B < C$... are you sure?
Jul
20
revised Minima point is a solution point
added 306 characters in body
Jul
20
revised Minima point is a solution point
added 5 characters in body
Jul
20
answered Minima point is a solution point
Jul
13
comment Pythagorean triple means
you mean H^2 + G^2 = A^2
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 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?