Embeddings and immersions of a 2-sphere in 4-manifolds
Embeddings and immersions of a 2-sphere in 4-manifolds
Let <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper M"> <mml:semantics> <mml:mi>M</mml:mi> <mml:annotation encoding="application/x-tex">M</mml:annotation> </mml:semantics> </mml:math> </inline-formula> be <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper C upper P squared number-sign left-parenthesis minus upper C upper P squared right-parenthesis number-sign upper P 1 number-sign midline-horizontal-ellipsis number-sign upper P Subscript m plus k Baseline"> <mml:semantics> <mml:mrow> <mml:mi>C</mml:mi> …