Ivar Fredholm: Quick Facts

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Facts

Also Known As	Erik Ivar Fredholm
Born	April 7, 1866 • Stockholm • Sweden
Died	August 17, 1927 (aged 61) • Stockholm • Sweden
Subjects Of Study	integral equation

Luca Pacioli

Italian mathematician

David Hilbert

German mathematician

Niels Henrik Abel

Norwegian mathematician

Vito Volterra

Italian mathematician

Lennart Carleson

Swedish mathematician

Magnus Gösta Mittag-Leffler

Swedish mathematician

$Koch snowflakeSwedish mathematician Niels von Koch published the fractal that bears his name in 1906. It begins with an equilateral triangle; three new equilateral triangles are constructed on each of its sides using the middle thirds as the bases, which are then removed to form a six-pointed star. This is continued in an infinite iterative process, so that the resulting curve has infinite length. The Koch snowflake is noteworthy in that it is continuous but nowhere differentiable; that is, at no point on the curve does there exist a tangent line.$