Out put of FeynCalc is not symbolic... How to solve it?

[JPCBPF]

When I run, for example:

LC[a,b,c,d] MT[a,b]

the out put is

LC[a,b,c,d] MT[a,b]

rather than

$\varepsilon_{abcd}g^{ab}$.

The code is correct because when I do

Contract[LC[a,b,c,d] MT[ab]]

it returns ZERO.

The same thing happens with,

MT[a, b] MT[a, b]

which resturns to me

MT[a, b]²

instead of

$g_{ab}g^{ab}$.

When I do

Contract[MT[a, b] MT[a, b]]

it returns FOUR as answer...

How can I make, for axample,

MT[a, b] MT[a, b]

returns

$g_{ab}g^{ab}$

instead of

MT[a, b]²??

Thank you!!!

[vsht]

Your output format in Mathematica is set to StandardForm instead of TraditionalForm. You can change it for the current session by evaluating `FCEnableTraditionalFormOutput`. Am 12.11.23 um 23:02 schrieb JPCBPF:

…

When I run, for example: LC[a,b,c,d] MT[a,b] the out put is LC[a,b,c,d] MT[a,b] rather than $\varepsilon_{abcd}g^{ab}$. The code is correct because when I do Contract[LC[a,b,c,d] MT[ab]] it returns ZERO. The same thing happens with, MT[a, b] MT[a, b] which resturns to me MT[a, b]² instead of $g_{ab}g^{ab}$. When I do Contract[MT[a, b] MT[a, b]] it returns FOUR as answer... How can I make, for axample, MT[a, b] MT[a, b] returns $g_{ab}g^{ab}$ instead of MT[a, b]²?? Thank you!!! — Reply to this email directly, view it on GitHub <#238>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABXSD5GSHLZVU23ZYZDJ3MTYEFBNXAVCNFSM6AAAAAA7IJKJWWVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZVHA2DINJSGA>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[JPCBPF]

Thank you, but it did not worked...

[vsht]

Then you should try changing it to TraditionalForm globally https://support.wolfram.com/34575?src=mathematica Am 13.11.23 um 14:37 schrieb JPCBPF:

…

Thank you, but it did not worked... — Reply to this email directly, view it on GitHub <#238 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABXSD5G2QO6WDQRSRANEEVDYEIPA5AVCNFSM6AAAAAA7IJKJWWVHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM3TKNJUGE3DE>. You are receiving this because you commented.Message ID: ***@***.***>