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Project: test
Views: 130
R2 = Manifold(2, 'R2', r'\mathbb{R}^2', start_index=1) Rect.<x,y> = R2.chart() U = R2.open_subset('U', coord_def={Rect : (y != 0, x > 0)}) RectU = Rect.restrict(U) Polar.<r,th> = U.chart(r'r:(0,+oo) th:(-pi,pi):\theta')
Polar
Chart (U, (r, th))
Polar.coord_range()
r: (0, +oo); th: (-pi, pi)