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general topology - Does it make geometric sense to say that open rectangles and open balls generate the same open sets - Mathematics Stack Exchange
real analysis - A closed ball in $l^{\infty}$ is not compact - Mathematics Stack Exchange
Let's say that [math] \tau [/math] is a topology of X. Then, are all elements of [math] \tau [/math] open sets of X? - Quora
functional analysis - Open and closed balls in $C[a,b]$ - Mathematics Stack Exchange
real analysis - Show that given two norms are equivalent - Mathematics Stack Exchange
functional analysis - How to develop an intuitive feel for spaces - Mathematics Stack Exchange
real analysis - about shape of open ball in metric space - Mathematics Stack Exchange
My next Math StackExchange post: "how do i prove that \{x\in R:0≤1≤1\} is [closed]" : r/mathmemes
How does the definition of continuous functions, 'there is always an epsilon neighbourhood of f(a) for every delta neighbourhood of a' (loosely speaking) tell that the functions have gapless graphs? - Quora
geometry - About $l_2$ and $l_\infty$ Norms - Mathematics Stack Exchange
real analysis - epsilon balls and 0- and 1- norms in optimal control - Mathematics Stack Exchange
What is the book Lee's Introduction to Smooth Manifolds about? - Quora
general topology - Does it make geometric sense to say that open rectangles and open balls generate the same open sets - Mathematics Stack Exchange
general topology - open ball on metric $d''(z,z') = \max \{d_i(x_i,x_i'), i\in \{1,\cdots,n\}\}$ in $\mathbb{R}^2$ - Mathematics Stack Exchange
general topology - Is the analogy of neighborhood as open ball applicable to arbitrary topological spaces? - Mathematics Stack Exchange