Closures of K-orbits in the flag variety for U(p,q)
classification
🧮 math.RT
keywords
flagvarietyclosuresmoothalreadyclassifyclosedclosures
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We classify the GL_p x GL_q-orbits in the flag variety for GL_{p+q} with rationally smooth closure, showing that they are all either already closed or are pullbacks from orbits with smooth closure in a partial flag variety.
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