A multiplicative analogue of complex symplectic implosion
We introduce a multiplicative version of complex-symplectic implosion in the case of SL(n,C)SL(n,C) . The universal multiplicative implosion for SL(n,C)SL(n,C) is an affine variety and can be viewed as a nonreductive geometric invariant theory quotient. It carries a torus action and reductions...
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| Médium: | Journal article |
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Springer International Publishing
2015
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| Shrnutí: | We introduce a multiplicative version of complex-symplectic implosion in the case of SL(n,C)SL(n,C) . The universal multiplicative implosion for SL(n,C)SL(n,C) is an affine variety and can be viewed as a nonreductive geometric invariant theory quotient. It carries a torus action and reductions by this action give the Steinberg fibres of SL(n,C)SL(n,C) . We also explain how the real symplectic group-valued universal implosion introduced by Hurtubise, Jeffrey and Sjamaar may be identified inside this space. |
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