This is an excerpt from the paper Groupes Reductifs by Borel and Tits.
Do you see the big "C" in the second paragraph? What does this notation mean? I've never seen it before.
This is an excerpt from the paper Groupes Reductifs by Borel and Tits.
Do you see the big "C" in the second paragraph? What does this notation mean? I've never seen it before.
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This is Bourbaki's Théorie des ensembles: