Search results for “number-theory”

A pilot study mapping ion-induced charge collection against bandgap and carrier mobility, and what it revealed about the cost of getting the time integration wrong

Every finite flat commutative group scheme over a noetherian local ring is the torsion component of the Picard scheme of a smooth projective scheme with 3-dimensional fibers, built as a quotient of a complete intersection. An application: Hodge numbers that jump in a smooth projective family.

A matrix, its notation, and the main types: row, column, echelon, square, diagonal, identity, symmetric - defined and shown with worked examples.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

The basic properties of addition, scalar multiplication, transposition, and multiplication of matrices, with justifications.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

International mathematics competition for pre-university students, held annually since 1959. Six problems over two days.

Задачи курса «Топология-2» (Ф. Е. Вылегжанин, НМУ, осень 2026), листок 2 от 16 сентября 2026 г. — сингулярные гомологии и цепные гомотопии. Цепное отображение из симплициальных цепей в сингулярные; ретракция и прямое слагаемое; гомоморфизм Гуревича из фундаментальной группы в первые гомологии; конечные CW-комплексы и классы гомологий; гомологии объединения цепочки пространств; гомологии симплекса и его остова; симплициальные отображения; цепная гомотопическая эквивалентность комплекса и его гомологий; цепная гомотопность как отношение эквивалентности; 5-лемма.