Ttdfjt

I need an arrow like the following:

I tried

newcommandwedgearrowmathrel/joinrelssearrow %stmaryrd

but it doesn't work well.

No tikz...works across math styles.

documentclassarticle
usepackagescalerel,stmaryrd
newsaveboxwedgearrowbaseline
saveboxwedgearrowbaseline$scalerel%
 ooalignkern.05pt/cr/mkern-8.5mussearrow$
newcommandwedgearrowmathrelscalerel*%
 useboxwedgearrowbaselineX %stmaryrd
begindocument
$Kwedgearrow L$

$scriptstyle Kwedgearrow L$

$scriptscriptstyle Kwedgearrow L$
enddocument

Similar to Ahrtaler's answer, the difference being that it also cooperates with subscripts (and all math styles) and becomes bold if one is in bold mode. I recommend this thread for further reading.

documentclassarticle
usepackagetikz
usepackageamsmath
makeatletter
DeclareRobustCommandcheckbold[1]% https://tex.stackexchange.com/a/24635/121799
 edef@tempamath@versionedef@tempbbold%
 ifx@tempa@tempb%
 def#11%
 else
 def#10%
 fi
makeatother 
tikzsetwedge arrow/.style=->,line cap=round,line join=round
newcommandwedgearrowcheckboldtmp%
ensuremathmathrel%
mathchoice%
tikz[baseline=-0.1ex]draw[line width=(1+0.33*tmp)*0.06em,wedge arrow](0,0) -- (60:0.6em) -- ++ (-60:0.6em);
%
tikz[baseline=-0.1ex]draw[line width=(1+0.33*tmp)*0.06em,wedge arrow](0,0) -- (60:0.6em) -- ++ (-60:0.6em);
%
tikz[baseline=-0.075ex]draw[line width=(1+0.33*tmp)*0.045em,wedge arrow](0,0) -- (60:0.45em) -- ++(-60:0.45em);
%
tikz[baseline=-0.06ex]draw[line width=(1+0.33*tmp)*0.035em,wedge arrow](0,0) -- (60:0.35em) -- ++ (-60:0.35em);

begindocument
$Awedgearrow B_Cwedgearrow D$ Large $Awedgearrow B_Cwedgearrow D$

boldmath$Awedgearrow B_Cwedgearrow D$ Large $Awedgearrow B_Cwedgearrow D$
unboldmath
enddocument

EDITs:

1. added mathrel at Eclipse Sun's suggestion.


2. Made the macro detect the font weight, too, so the arrow goes bold in boldmath or boldsymbol, just like the standard arrows.


3. Added round line caps and joins, motivated by Joey's comment.

I think you could do something like that:

documentclassscrartcl

usepackagetikz

newlengthtextsize

makeatletter
setlengthtextsizef@size pt
makeatother

newcommandwedgearrow%
 resizebox ! textsize 
 begintikzpicture
 draw[->, line width = 2pt] (0,0) -- (.5,1) -- (1,0);
 endtikzpicture


begindocument
 Hi this wedgearrow is a wedgearrow
enddocument

With mathpalette: the slash is resized to the same vertical size as the arrow, a bit widened for compensating the stroke width and vertically placed to fit.

Some manual adjustment is needed for getting the tops to meet.

documentclassarticle
usepackageamsmath
usepackagestmaryrd
usepackagegraphicx

makeatletter
newcommandwedgearrowmathrelmathpalettewedge@arrowrelax
newcommandwedge@arrow[2]%
 begingroup
 sboxz@$m@th#1ssearrow$%
 sboxtw@resizebox!dimexprhtz@+dpz@raiseboxdepth$m@th#1/$%
 raisebox-dpz@scalebox1.1[1]boxtw@% slash
 mathchoicemkern-2.5mumkern-2.5mumkern-3mumkern-3.5mu%
 boxz@ % arrow
 endgroup

makeatother

begindocument

$Kwedgearrow L_Kwedgearrow L_Kwedgearrow L$

Huge$Kwedgearrow L$

enddocument