SandboxSymbols
From Maths
[math]\mathbb{R}^n[/math] [ilmath]x[/ilmath] [ilmath]f[/ilmath] [ilmath]g[/ilmath] [ilmath]f^{-1} [/ilmath]
[math]B_\delta(f(x))[/math]
[ilmath]f^{-1}(B_\delta(f(x)))[/ilmath]
[ilmath]U[/ilmath] [ilmath]f(U)[/ilmath]