Objects in C++

Object	Example	Description
Symbol	Symbol("s")	a real variable s.
Index	Index("mu",Type::VD)	a Lorentz index mu with dimension D.
	Index("mu",Type::CA)	a color index a with dimension NA.
	Index("mu",Type::CF)	a color index i with dimension NF.
Vector	Vector("p")	a vector/momentum p.
Pair	Pair(mu,nu)	a Kronecker delta $\delta_{\mu\nu}$ with Index mu and nu.
	Pair(p,mu)	a Vector p with Lorentz Index mu, $p^\mu$, p.mu.
	Pair(p,q)	a scalar product $p\cdot q$ between Vector p and q.
SUNT	SUNT(a,i,j)	a T-matrix element $T^a_{ij}$ for SU(N) group.
	SUNT(lst{a,b,c},i,j)	a matrix element of a product of T, $(T^aT^bT^c)_{ij}$.
SUNF	SUNF(a,b,c)	a structure constant $f^{abc}$ of SU(N) group.
SUNF4	SUNF4(a,b,c,d)	a contract of two SUNF, $f^{abe} f^{ecd}$.
Eps	Eps(mu1,mu2,mu3,mu4)	a Levi-Civita tensor $\varepsilon_{\mu_1\mu_2\mu_3\mu_4}$.
	Eps(p1,p2,mu1,mu2)	a partially contracted Levi-Civita tensor $\varepsilon_{p_1p_2\mu_1\mu_2}$.
	Eps(p1,p2,p3,p4)	a fully contracted Levi-Civita tensor $\varepsilon_{p_1p_2p_3p_4}$.
DGamma	DGamma(mu,l)	a Dirac-$\gamma$ matrix $\gamma_\mu$ for a fermion line l.
	DGamma(p,l)	a Dirac slash $p\!\!\!/=p^\mu\gamma_\nu$ for a fermion line l.
	DGamma(1/5/6/7,l)	a unit matrix, $\gamma_5$, $\gamma_6$, $\gamma_7$ for a fermion line l.
SP	SP(mu.nu)	evaluated to $\delta_{\mu\nu}$.
	SP(p+s*q,mu)	evaluated to $p^\mu+sq^\mu$.
	SP(2*p+q,p+s*q)	evaluated to $2p^2+(2s+1)p\cdot q+sq^2$.
GAS	GAS(mu)	evaluated to $\gamma_\mu$.
	GAS(3*p+s*q)	evaluated to $3p\!\!\!/+sq\!\!\!/$.
	GAS(1/5/6/7)	evaluated to a unit matrix, $\gamma_5$, $\gamma_6$, $\gamma_7$, respectively.
LC	LC(p,mu,p+s*q,k)	evaluated to $s\varepsilon_{kph\mu}$.
TR	TR(expr)	a wrapper for the Dirac trace of expression expr.
TTR	TTR(lst{a,b,c,d})	a wraaper for the SU(N) trace of $T^aT^bT^cT^d$.
form	form(expr)	evaluate the expression expr using FORM program.