Learn Mathematics


 * Linear algebra,  Gilbert Strang, MIT [link]


 * Differential eqiations, MIT [link]
 * https://www.edx.org/course/introduction-differential-equations-bux-math226-1x
 * https://www.edx.org/course/linear-differential-equations-bux-math226-2x
 * https://www.edx.org/course/nonlinear-differential-equations-order-bux-math226-3x
 * Selected Topics in Mathematical Physics, prof. V. Balakrishnan [link]
 * The Fourier Transforms and its Applications, Stanford, [link]
 * Advanced Calculus [link]
 * Lie Groups and Lie Algebras [link]
 * Math history [link]
 * Differential topology [link]
 * Функциональный анализ lektorium.tv [link]
 * Topology & Geometry by Dr Tadashi Tokieda [link]
 * Tensor Calculus and the Calculus of Moving Surfaces - P. Greenfield [link] (todo: much more stuff is on his channel)

Differential geometry (in the context of theoretical physics)

 * Lectures on Geometrical Anatomy of Theoretical Physics, Fredric Schuller, FAU [link]
 * Геометрические методы в классической теории поля, Иванов М.Г., МФТИ [link]