Area III
Inner products, distributions, measure, the complex plane, calculus, and open sets.
0/17 rooms
Pathway XII
Length and angle from a pairing. Orthogonal projection is the closest point.
0/2 rooms
Pathway XIII
The Dirac delta is not a function. It is a linear tester of smooth, rapidly decaying probes.
0/2 rooms
Pathway XIV
Length of wild sets, then spaces of functions with integrable p-th power.
0/2 rooms
Pathway XIV
i as a quarter-turn, multiplication as rotate-and-scale, Euler's identity, poles.
0/4 rooms
Pathway XV
Slopes from shrinking secants, area from rectangles, and curvature as how fast the tangent turns.
0/4 rooms
Pathway XVII
Open sets, unions, finite intersections. Compactness is finite subcovers.
0/3 rooms