dt added in Beta definition. new line added in mirror symmetry
dt added in Beta definition. new line added in mirror symmetry

kaichogami/sympy,Designist/sympy,madan96/sympy,beni55/sympy,sampadsaha5/sympy,ga7g08/sympy,souravsingh/sympy,sahilshekhawat/sympy,asm666/sympy,atsao72/sympy,sahmed95/sympy,wyom/sympy,Davidjohnwilson/sympy,pandeyadarsh/sympy,jbbskinny/sympy,pbrady/sympy,saurabhjn76/sympy,madan96/sympy,ahhda/sympy,pandeyadarsh/sympy,VaibhavAgarwalVA/sympy,kaushik94/sympy,grevutiu-gabriel/sympy,moble/sympy,sunny94/temp,VaibhavAgarwalVA/sympy,postvakje/sympy,Curious72/sympy,AunShiLord/sympy,VaibhavAgarwalVA/sympy,pbrady/sympy,cccfran/sympy,kevalds51/sympy,jaimahajan1997/sympy,Gadal/sympy,cswiercz/sympy,sunny94/temp,beni55/sympy,mafiya69/sympy,emon10005/sympy,Curious72/sympy,lindsayad/sympy,liangjiaxing/sympy,yukoba/sympy,aktech/sympy,ChristinaZografou/sympy,iamutkarshtiwari/sympy,ChristinaZografou/sympy,farhaanbukhsh/sympy,ga7g08/sympy,Mitchkoens/sympy,postvakje/sympy,drufat/sympy,jamesblunt/sympy,MridulS/sympy,cccfran/sympy,moble/sympy,mafiya69/sympy,atsao72/sympy,liangjiaxing/sympy,hargup/sympy,chaffra/sympy,AkademieOlympia/sympy,shikil/sympy,asm666/sympy,jamesblunt/sympy,Davidjohnwilson/sympy,dqnykamp/sympy,AunShiLord/sympy,yukoba/sympy,shipci/sympy,lindsayad/sympy,Mitchkoens/sympy,skidzo/sympy,Gadal/sympy,sahilshekhawat/sympy,jaimahajan1997/sympy,mcdaniel67/sympy,souravsingh/sympy,chaffra/sympy,maniteja123/sympy,Davidjohnwilson/sympy,kumarkrishna/sympy,drufat/sympy,cccfran/sympy,saurabhjn76/sympy,sampadsaha5/sympy,AkademieOlympia/sympy,pbrady/sympy,Designist/sympy,abhiii5459/sympy,sampadsaha5/sympy,abloomston/sympy,Arafatk/sympy,hargup/sympy,garvitr/sympy,rahuldan/sympy,chaffra/sympy,Titan-C/sympy,drufat/sympy,shipci/sympy,jbbskinny/sympy,wyom/sympy,kaushik94/sympy,maniteja123/sympy,farhaanbukhsh/sympy,rahuldan/sympy,cswiercz/sympy,debugger22/sympy,yashsharan/sympy,Vishluck/sympy,shikil/sympy,MridulS/sympy,toolforger/sympy,wanglongqi/sympy,sahmed95/sympy,Arafatk/sympy,Gadal/sympy,kevalds51/sympy,atreyv/sympy,asm666/sympy,oliverlee/sympy,yukoba/sympy,vipulroxx/sympy,kumarkrishna/sympy,mafiya69/sympy,bukzor/sympy,jerli/sympy,atreyv/sympy,iamutkarshtiwari/sympy,mcdaniel67/sympy,emon10005/sympy,skidzo/sympy,diofant/diofant,jbbskinny/sympy,MridulS/sympy,sunny94/temp,meghana1995/sympy,kaushik94/sympy,dqnykamp/sympy,yashsharan/sympy,shipci/sympy,Shaswat27/sympy,jamesblunt/sympy,vipulroxx/sympy,abhiii5459/sympy,pandeyadarsh/sympy,aktech/sympy,toolforger/sympy,postvakje/sympy,debugger22/sympy,AunShiLord/sympy,beni55/sympy,bukzor/sympy,Sumith1896/sympy,jerli/sympy,ChristinaZografou/sympy,grevutiu-gabriel/sympy,debugger22/sympy,garvitr/sympy,Sumith1896/sympy,MechCoder/sympy,abhiii5459/sympy,jerli/sympy,kumarkrishna/sympy,dqnykamp/sympy,emon10005/sympy,jaimahajan1997/sympy,farhaanbukhsh/sympy,atreyv/sympy,skidzo/sympy,toolforger/sympy,ahhda/sympy,wanglongqi/sympy,bukzor/sympy,kaichogami/sympy,madan96/sympy,ga7g08/sympy,MechCoder/sympy,sahmed95/sympy,abloomston/sympy,sahilshekhawat/sympy,vipulroxx/sympy,atsao72/sympy,mcdaniel67/sympy,skirpichev/omg,moble/sympy,oliverlee/sympy,hargup/sympy,grevutiu-gabriel/sympy,Arafatk/sympy,rahuldan/sympy,souravsingh/sympy,meghana1995/sympy,ahhda/sympy,saurabhjn76/sympy,Curious72/sympy,Titan-C/sympy,wyom/sympy,yashsharan/sympy,Titan-C/sympy,Designist/sympy,meghana1995/sympy,Shaswat27/sympy,garvitr/sympy,iamutkarshtiwari/sympy,Sumith1896/sympy,Vishluck/sympy,Shaswat27/sympy,oliverlee/sympy,abloomston/sympy,MechCoder/sympy,lindsayad/sympy,kevalds51/sympy,Mitchkoens/sympy,liangjiaxing/sympy,kaichogami/sympy,cswiercz/sympy,Vishluck/sympy,AkademieOlympia/sympy,maniteja123/sympy,aktech/sympy,shikil/sympy,wanglongqi/sympy