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Mar 3, 2018 at 18:51 history edited Oscar Randal-Williams CC BY-SA 3.0
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Mar 1, 2018 at 17:29 comment added Oscar Randal-Williams @C.Zhihao: Maybe it is not necessary, but the version with field coefficients is the one that I have personally checked.
Mar 1, 2018 at 16:22 comment added Kevin Casto Otherwise you have to worry about extension problems, it might not be a direct sum.
Mar 1, 2018 at 14:53 comment added C. Zhihao Thanks! this add a lot of things for me to check out; why is necessary the assumption on considering coefficients over a field here?
Mar 1, 2018 at 10:18 history answered Oscar Randal-Williams CC BY-SA 3.0