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A variational principle in discrete space–time: existence of minimizers |
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| Authors: | Felix Finster |
| Institution: | 1.NWFI—Mathematik,Universit?t Regensburg,Regensburg,Germany |
| Abstract: | We formulate a variational principle for a collection of projectors in an indefinite inner product space. The existence of minimizers is proved in various situations. |
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