Need cm family only for bold italic Greeks

Question

In my document, I need to use Palatino as my text font and Euler for math font, I'm using the following code for this:

\documentclass{book}
\usepackage[T1]{fontenc}
\usepackage{palatino,mathpazo}
\usepackage{eulervm}%
\usepackage{amsmath}
\begin{document}
$\boldsymbol{\varphi}\quad \varphi$
\end{document}

But I need the CM font for bold-italic Greeks, i.e \varphi should be in Euler font and \boldsymbol{\varphi} is in standard CM family, please advise how to achieve it...

Any advise for my requirement? Please....

Note that I'm using LaTeX -> dvips -> ps2pdf

Can you clarify why the bold Euler symbol needs to be replaced? There might be a better solution. — Davislor, Feb 26 '21 at 06:22
One of my professor wants to differentiate the bold symbol from the roman symbol.... — MadyYuvi, Feb 26 '21 at 06:36

Davislor · Accepted Answer · 2021-02-27T00:02:29.180

I do not recommend that. Nevertheless, if your prof ordered you to, it’s probably not a battle worth fighting. Here’s how.

In LuaLaTeX or XeLaTeX, you can load Latin Modern or New Computer Modern with range=\mbfvarphi to redefine bold upright \varphi, range=bfup/{Greek,greek} to redefine all bold upright Greek, or range=bfup to redefine the bold upright alphabet. You can use any math font, or any bold upright font that supports Greek. This example requires you to download the font Neo Euler.

I warn you in advance that it’s likely that this is a lot more complicated than it needs to be and \setmathfont{Neo Euler} would work for you. I do a lot of extra set-up to get unicode-math to use Neo Euler only for the symbols the font has, and fall back to a different math font for everything else (as well as digits and, of course, Greek).

\documentclass{article}
\usepackage{unicode-math}
\unimathsetup{math-style=upright, partial=upright, nabla=upright}
\defaultfontfeatures{Scale=MatchLowercase, Ligatures=TeX }
\setmainfont{TeX Gyre Pagella}
\defaultfontfeatures{Scale=MatchLowercase}
\setmathfont{Asana Math}
\setmathfont[range={"0000-"0001,"0020-"007E,
                    "00A0,"00A7-"00A8,"00AC,"00AF,"00B1,"00B4-"00B5,"00B7,
                    "00D7,"00F7,
                    "0131,
                    "0237,"02C6-"02C7,"02D8-"02DA,"02DC,
                    "0300-"030C,"030F,"0311,"0323-"0325,"032E-"0332,"0338,
                    "0391-"0393,"0395-"03A1,"03A3-"03A8,"03B1-"03BB,
                    "03BD-"03C1,"03C3-"03C9,"03D1,"03D5-"03D6,"03F5,
                    "2016,"2018-"2019,"2021,"2026-"202C,"2032-"2037,"2044,
                    "2057,"20D6-"20D7,"20DB-"20DD,"20E1,"20EE-"20EF,
                    "210B-"210C,"210E-"2113,"2118,"211B-"211C,"2126-"2128,
                    "212C-"212D,"2130-"2131,"2133,"2135,"2190-"2199,
                    "21A4,"21A6,"21A9-"21AA,"21BC-"21CC,"21D0-"21D5,
                    "2200,"2202-"2209,"220B-"220C,"220F-"2213,"2215-"221E,
                    "2223,"2225,"2227-"222E,"2234-"2235,"2237-"223D,
                    "2240-"224C,"2260-"2269,"226E-"2279,"2282-"228B,"228E,
                    "2291-"2292,"2295-"2299,"22A2-"22A5,"22C0-"22C5,
                    "22DC-"22DD,"22EF,"22F0-"22F1,
                    "2308-"230B,"2320-"2321,"2329-"232A,"239B-"23AE,
                    "23DC-"23DF,
                    "27E8-"27E9,"27F5-"27FE,"2A0C,"2B1A,
                    "1D400-"1D433,"1D49C,"1D49E-"1D49F,"1D4A2,"1D4A5-"1D4A6,
                    "1D4A9-"1D4AC,"1D4AE-"1D4B5,"1D4D0-"1D4E9,"1D504-"1D505,
                    "1D507-"1D50A,"1D50D-"1D514,"1D516-"1D51C,"1D51E-"1D537,
                    "1D56C-"1D59F,"1D6A8-"1D6B8,"1D6BA-"1D6D2,"1D6D4-"1D6DD,
                    "1D6DF,"1D6E1,"1D7CE-"1D7D7
                   }]{Neo Euler}
\setmathfont[range=up/{greek,Greek}, script-features={}, sscript-features={}
            ]{Neo Euler}
\setmathfont[range=up/{latin,Latin}, script-features={}, sscript-features={}
            ]{Neo Euler}
\setmathfont[range={bfup/{latin, Latin}, frak, bffrak, cal},
             script-features={}, sscript-features={}
            ]{Neo Euler}
\setmathfont[range={up/num, bfup/num, it, bfit, scr, bfscr,
                    sfup, sfit, bfsfup, bfsfit, tt}
            ]{Asana Math}
\setmathfont[range=bfup/{Greek,greek}]{NewCMMath-Book}
\newcommand\vectorsym[1]{\symbf{#1}}
\begin{document}
[ u, v, w, \varphi, \vartheta, \vectorsym{v}, \vectorsym{\varphi}
]
\end{document}

For comparison, using only the letters from Neo Euler, you would get:

If you are also required to use PDFLaTeX, you can define a weird math alphabet that uses Euler in \mathversion{normal} and Computer Modern in \mathversion{bold}:

\documentclass{article}
\usepackage{amsmath}
\usepackage{tgpagella}
\usepackage{eucal, eufrak, eulervm}
\usepackage{bm}
\DeclareSymbolFont{weirdletters}{U}{zeur}{m}{n}
\SetSymbolFont{weirdletters}{bold}{OML}{cmm}{b}{it}
\DeclareMathSymbol\Gamma    {\mathalpha}{weirdletters}{"00}
\DeclareMathSymbol\Delta    {\mathalpha}{weirdletters}{"01}
\DeclareMathSymbol\Theta    {\mathalpha}{weirdletters}{"02}
\DeclareMathSymbol\Lambda   {\mathalpha}{weirdletters}{"03}
\DeclareMathSymbol\Xi       {\mathalpha}{weirdletters}{"04}
\DeclareMathSymbol\Pi       {\mathalpha}{weirdletters}{"05}
\DeclareMathSymbol\Sigma    {\mathalpha}{weirdletters}{"06}
\DeclareMathSymbol\Upsilon  {\mathalpha}{weirdletters}{"07}
\DeclareMathSymbol\Phi      {\mathalpha}{weirdletters}{"08}
\DeclareMathSymbol\Psi      {\mathalpha}{weirdletters}{"09}
\DeclareMathSymbol\Omega    {\mathalpha}{weirdletters}{"0A}
\DeclareMathSymbol{\alpha}  {\mathalpha}{weirdletters}{"0B}
\DeclareMathSymbol{\beta}   {\mathalpha}{weirdletters}{"0C}
\DeclareMathSymbol{\gamma}  {\mathalpha}{weirdletters}{"0D}
\DeclareMathSymbol{\delta}  {\mathalpha}{weirdletters}{"0E}
\DeclareMathSymbol{\epsilon}{\mathalpha}{weirdletters}{"0F}
\DeclareMathSymbol{\zeta}   {\mathalpha}{weirdletters}{"10}
\DeclareMathSymbol{\eta}    {\mathalpha}{weirdletters}{"11}
\DeclareMathSymbol{\theta}  {\mathalpha}{weirdletters}{"12}
\DeclareMathSymbol{\iota}   {\mathalpha}{weirdletters}{"13}
\DeclareMathSymbol{\kappa}  {\mathalpha}{weirdletters}{"14}
\DeclareMathSymbol{\lambda} {\mathalpha}{weirdletters}{"15}
\DeclareMathSymbol{\mu}     {\mathalpha}{weirdletters}{"16}
\DeclareMathSymbol{\nu}     {\mathalpha}{weirdletters}{"17}
\DeclareMathSymbol{\xi}     {\mathalpha}{weirdletters}{"18}
\DeclareMathSymbol{\pi}     {\mathalpha}{weirdletters}{"19}
\DeclareMathSymbol{\rho}    {\mathalpha}{weirdletters}{"1A}
\DeclareMathSymbol{\sigma}  {\mathalpha}{weirdletters}{"1B}
\DeclareMathSymbol{\tau}    {\mathalpha}{weirdletters}{"1C}
\DeclareMathSymbol{\upsilon}{\mathalpha}{weirdletters}{"1D}
\DeclareMathSymbol{\phi}    {\mathalpha}{weirdletters}{"1E}
\DeclareMathSymbol{\chi}    {\mathalpha}{weirdletters}{"1F}
\DeclareMathSymbol{\psi}    {\mathalpha}{weirdletters}{"20}
\DeclareMathSymbol{\omega}  {\mathalpha}{weirdletters}{"21}
\DeclareMathSymbol{\varepsilon}{\mathalpha}{weirdletters}{"22}
\DeclareMathSymbol{\vartheta}{\mathalpha}{weirdletters}{"23}
\DeclareMathSymbol{\varpi}  {\mathalpha}{weirdletters}{"24}
\DeclareMathSymbol{\varphi} {\mathalpha}{weirdletters}{"27}
\DeclareMathSymbol\upOmega  {\mathord}{weirdletters}{"0A}
\DeclareMathSymbol\upDelta  {\mathord}{weirdletters}{"01}
\newcommand\vectorsym[1]{\boldsymbol{#1}}
\begin{document}
[ u, v, w, \varphi, \vartheta, \vectorsym{v}, \vectorsym{\varphi}
]
\end{document}

I have to say, I disagree with your professor that this looks better. If you’re at least allowed to substitute a different font, you could use one of the three or so upright legacy math fonts that contain Greek, for example, Math Design Charter:

\documentclass{article}
\usepackage{amsmath}
\usepackage{tgpagella}
\usepackage{eucal, eufrak, eulervm}
\usepackage{bm}
\DeclareSymbolFont{weirdletters}{U}{zeur}{m}{n}
\SetSymbolFont{weirdletters}{bold}{OML}{mdbch}{b}{n}
\DeclareMathSymbol\Gamma    {\mathalpha}{weirdletters}{"00}
\DeclareMathSymbol\Delta    {\mathalpha}{weirdletters}{"01}
\DeclareMathSymbol\Theta    {\mathalpha}{weirdletters}{"02}
\DeclareMathSymbol\Lambda   {\mathalpha}{weirdletters}{"03}
\DeclareMathSymbol\Xi       {\mathalpha}{weirdletters}{"04}
\DeclareMathSymbol\Pi       {\mathalpha}{weirdletters}{"05}
\DeclareMathSymbol\Sigma    {\mathalpha}{weirdletters}{"06}
\DeclareMathSymbol\Upsilon  {\mathalpha}{weirdletters}{"07}
\DeclareMathSymbol\Phi      {\mathalpha}{weirdletters}{"08}
\DeclareMathSymbol\Psi      {\mathalpha}{weirdletters}{"09}
\DeclareMathSymbol\Omega    {\mathalpha}{weirdletters}{"0A}
\DeclareMathSymbol{\alpha}  {\mathalpha}{weirdletters}{"0B}
\DeclareMathSymbol{\beta}   {\mathalpha}{weirdletters}{"0C}
\DeclareMathSymbol{\gamma}  {\mathalpha}{weirdletters}{"0D}
\DeclareMathSymbol{\delta}  {\mathalpha}{weirdletters}{"0E}
\DeclareMathSymbol{\epsilon}{\mathalpha}{weirdletters}{"0F}
\DeclareMathSymbol{\zeta}   {\mathalpha}{weirdletters}{"10}
\DeclareMathSymbol{\eta}    {\mathalpha}{weirdletters}{"11}
\DeclareMathSymbol{\theta}  {\mathalpha}{weirdletters}{"12}
\DeclareMathSymbol{\iota}   {\mathalpha}{weirdletters}{"13}
\DeclareMathSymbol{\kappa}  {\mathalpha}{weirdletters}{"14}
\DeclareMathSymbol{\lambda} {\mathalpha}{weirdletters}{"15}
\DeclareMathSymbol{\mu}     {\mathalpha}{weirdletters}{"16}
\DeclareMathSymbol{\nu}     {\mathalpha}{weirdletters}{"17}
\DeclareMathSymbol{\xi}     {\mathalpha}{weirdletters}{"18}
\DeclareMathSymbol{\pi}     {\mathalpha}{weirdletters}{"19}
\DeclareMathSymbol{\rho}    {\mathalpha}{weirdletters}{"1A}
\DeclareMathSymbol{\sigma}  {\mathalpha}{weirdletters}{"1B}
\DeclareMathSymbol{\tau}    {\mathalpha}{weirdletters}{"1C}
\DeclareMathSymbol{\upsilon}{\mathalpha}{weirdletters}{"1D}
\DeclareMathSymbol{\phi}    {\mathalpha}{weirdletters}{"1E}
\DeclareMathSymbol{\chi}    {\mathalpha}{weirdletters}{"1F}
\DeclareMathSymbol{\psi}    {\mathalpha}{weirdletters}{"20}
\DeclareMathSymbol{\omega}  {\mathalpha}{weirdletters}{"21}
\DeclareMathSymbol{\varepsilon}{\mathalpha}{weirdletters}{"22}
\DeclareMathSymbol{\vartheta}{\mathalpha}{weirdletters}{"23}
\DeclareMathSymbol{\varpi}  {\mathalpha}{weirdletters}{"24}
\DeclareMathSymbol{\varphi} {\mathalpha}{weirdletters}{"27}
\DeclareMathSymbol\upOmega  {\mathord}{weirdletters}{"0A}
\DeclareMathSymbol\upDelta  {\mathord}{weirdletters}{"01}
\newcommand\vectorsym[1]{\boldsymbol{#1}}
\begin{document}
[ u, v, w, \varphi, \vartheta, \vectorsym{v}, \vectorsym{\varphi}
]
\end{document}

Much thanks, my professor satisfied with the second option as you provided for PDFLaTeX .... — MadyYuvi, Feb 26 '21 at 14:00
The Professor asked me to convey his heartfull thanks to you .... — MadyYuvi, Feb 26 '21 at 16:15

Need cm family only for bold italic Greeks

1 Answers1

Linked