On a Proof of The
نویسنده
چکیده
Let X be a smooth, closed, oriented non-spin 4-manifold with even intersection form kE8 ⊕ nH . In this article we show that n ≥ |k| on X . Thus we confirm the 10 8 -conjecture affirmatively. As an application, we also give an estimate of intersection forms of spin coverings of non-spin 4-manifolds with even intersection forms.
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