Abstract
We prove that the action of the orthogonal group of an integral, unimodular lattice whose rank and signature satisfy a certain indefiniteness condition acts transitively on pairs of mutually orthogonal elements with the same isometric invariants.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02568298.
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Askitas, N. Embeddings of 2-spheres in 4-manifolds. Manuscripta Math 89, 35–47 (1996). https://doi.org/10.1007/BF02567503
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DOI: https://doi.org/10.1007/BF02567503