Vladyslav Shtabovenko

Problems with integers inside boxes

3

The following code cannot be processed by `CellToTeX` ``` CellToTeX[ Cell[BoxData[ FormBox[FractionBox["1", TemplateBox[{"\"(\"", SuperscriptBox[ FormBox[FormBox[StyleBox["k", Bold, StripOnInput -> False], TraditionalForm], TraditionalForm], 2], "\"-\"", RowBox[{"\[ImaginaryI]", " ", "\"\[Eta]\""}], "\")\""}, "Row", DisplayFunction...

TemplateBox with RowDefault tag is unsupported

2

It appears that a `TemplateBox` containing a "RowDefault" tag cannot be processed properly. Cf. e.g. this typesetting code from https://mathematica.stackexchange.com/questions/174627/writing-partial-differentiation-in-a-subscript/174630#174630 ``` Derivative /: MakeBoxes[ Derivative[n_Integer?NonNegative, m_Integer?NonNegative][f_], form_ ] := SubscriptBox[...

ChoiceDialog doesn't work

1

Executing ``` ChoiceDialog["Make a choice..."] ``` one obtains only ``` MathLink`Synchronized::noshare: -- Message text not found -- ```

This code is not really compatible with fermion fields: https://github.com/FeynCalc/feyncalc/blob/ca803c11325273e39ee1fecb951c6bd9866e74c2/FeynCalc/Feynman/ExpandPartialD.m#L266-L270 Ideas: Check for Dirac indices, introduce dedicated `DataType`s

Improve FCLoopIntegralToGraph for factorizing integrals

1

Here is an example of a factorizing 3-loop integral that cannot be properly graphed ``` FCLoopIntegralToGraph[ SFAD[{{I*p1, 0}, {-m1^2, -1}, 1}]* SFAD[{{I*(p2 - p3), 0}, {-m1^5, -1}, 1}]* SFAD[{{I*(p3 +...

Add a function for rewriting the amplitude in terms of GLIs

1

FCLoopApplyTopologyMappings alone is not sufficient to write the given amplitude as a linear combination of GLIs (or products thereof).

Add Schwinger, Lee-Pomeransky and Baikov parametrization to FCFeymanParametrize.

1

FCFeynmanParametrize currently supports only Feynman parametrization. It would be good to have Schwinger, Lee-Pomeransky and Baikov working as well. At least for pure denominator integrals.

This doesn't work ``` PauliTrace[SI[a, b]] // PauliSimplify ``` This sort of works ``` PauliTrace[SI[a, b]] // LorentzToCartesian // PauliSimplify ```

SUNSimplify and SUNTrace require a serious refactoring, since many expressions cannot be simplified straightforwardly, yet after some fiddling with the Explicit and SUNTrace options one can still get the desired...

Tensor decompositions of high rank integrals or integrals with many legs tend to become very large. It is not efficient to load them from text files, as this may significantly...