NNNLO matching functions for PDFs

Classes
class	apfel::C3nsppdf
	The O(αs3) valence plus matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...
class	apfel::C3nsmpdf
	The O(αs3) valence minus matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...
class	apfel::C3pvpdf
	The O(αs3) pure-valence matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...
class	apfel::C3pspdf
	The O(αs3) pure-singlet matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...
class	apfel::C3qgpdf
	The O(αs3) quark-gluon matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...
class	apfel::C3gqpdf
	The O(αs3) gluon-quark matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...
class	apfel::C3ggpdf
	The O(αs3) gluon-gluon matching function for PDFs (reference: https://arxiv.org/pdf/2012.03256.pdf). More...

Detailed Description