In algebraic geometry and string theory, the phenomenon of wall-crossing describes the discontinuous change of a certain quantity, such as an integer geometric invariant, an index or a space of BPS state, across a codimension-one wall in a space of stability conditions, a so-called wall of marginal stability. == References == Kontsevich, Maxim; Soibelman, Yan (2008).
In algebraic geometry and string theory, the phenomenon of wall-crossing describes the discontinuous change of a certain quantity, such as an integer geometric invariant, an index or a space of BPS state, across a codimension-one wall in a space of stability conditions, a so-called wall of marginal stability. == References == Kontsevich, Maxim; Soibelman, Yan (2008).
Source: Wikipedia "Wall-crossing" · CC BY-SA 4.0
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