Homology and homotopy of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$$"><mml:mi>B</mml:mi><mml:mi mathvariant="normal">O</mml:mi></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$$"><mml:mi>B</mml:mi><mml:mi mathvariant="normal">U</mml:mi></mml:math>; Bott periodicity
BO, BU的同调和同伦; Bott周期性
Homology and homotopy of <n0:math xmlns:n0="http://www.w3.org/1998/Math/MathML" alttext="$$"><n0:mi>B</n0:mi><n0:mi mathvariant="normal">O</n0:mi></n0:math> and <n0:math xmlns:n0="http://www.w3.org/1998/Math/MathML" alttext="$$"><n0:mi>B</n0:mi><n0:mi mathvariant="normal">U</n0:mi></n0:math>; Bott periodicity