Equality of module sectional category and rational sectional category

Let f ⁣:XYf\colon X\rightarrow Y be a map whose rationalisation f0f_0 admits a homotopy retraction. Let secat(f0){\rm secat}(f_0) denote the sectional category of the rationalisation and msecat(f){\rm msecat}(f) its module sectional category. Equality conjecture. One has

msecat(f)=secat(f0).{\rm msecat}(f)={\rm secat}(f_0).

The equality would identify the module and rational sectional categories for maps satisfying the stated rational homotopy-retraction hypothesis. The source presents this as a conjecture after noting examples where the hypothesis fails and the equality need not hold; no resolution is given.

Sources & referencesView supporting material

Primary source

J. G. Carrasquel-Vera, “The rational sectional category of certain maps”, arXiv:1503.07314 (2016).

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