Jupyter shortbold markdown cell, just paste into a markdown cell to enjoy shortbold MathJax for the rest of the notebook!

shortbold.md

$ \newcommand{\aB}{\mathbf{a}} \newcommand{\bB}{\mathbf{b}} \newcommand{\cB}{\mathbf{c}} \newcommand{\dB}{\mathbf{d}} \newcommand{\eB}{\mathbf{e}} \newcommand{\fB}{\mathbf{f}} \newcommand{\gB}{\mathbf{g}} \newcommand{\hB}{\mathbf{h}} \newcommand{\iB}{\mathbf{i}} \newcommand{\jB}{\mathbf{j}} \newcommand{\kB}{\mathbf{k}} \newcommand{\lB}{\mathbf{l}} \newcommand{\mB}{\mathbf{m}} \newcommand{\nB}{\mathbf{n}} \newcommand{\oB}{\mathbf{o}} \newcommand{\pB}{\mathbf{p}} \newcommand{\qB}{\mathbf{q}} \newcommand{\rB}{\mathbf{r}} \newcommand{\sB}{\mathbf{s}} \newcommand{\tB}{\mathbf{t}} \newcommand{\uB}{\mathbf{u}} \newcommand{\vB}{\mathbf{v}} \newcommand{\wB}{\mathbf{w}} \newcommand{\xB}{\mathbf{x}} \newcommand{\yB}{\mathbf{y}} \newcommand{\zB}{\mathbf{z}} $ $ \newcommand{\AB}{\mathbf{A}} \newcommand{\BB}{\mathbf{B}} \newcommand{\CB}{\mathbf{C}} \newcommand{\DB}{\mathbf{D}} \newcommand{\EB}{\mathbf{E}} \newcommand{\FB}{\mathbf{F}} \newcommand{\GB}{\mathbf{G}} \newcommand{\HB}{\mathbf{H}} \newcommand{\IB}{\mathbf{I}} \newcommand{\JB}{\mathbf{J}} \newcommand{\KB}{\mathbf{K}} \newcommand{\LB}{\mathbf{L}} \newcommand{\MB}{\mathbf{M}} \newcommand{\NB}{\mathbf{N}} \newcommand{\OB}{\mathbf{O}} \newcommand{\PB}{\mathbf{P}} \newcommand{\QB}{\mathbf{Q}} \newcommand{\RB}{\mathbf{R}} \newcommand{\SB}{\mathbf{S}} \newcommand{\TB}{\mathbf{T}} \newcommand{\UB}{\mathbf{U}} \newcommand{\VB}{\mathbf{V}} \newcommand{\WB}{\mathbf{W}} \newcommand{\XB}{\mathbf{X}} \newcommand{\YB}{\mathbf{Y}} \newcommand{\ZB}{\mathbf{Z}} $ $ \newcommand{\alphaB}{\boldsymbol{\alpha}} \newcommand{\betaB}{\boldsymbol{\beta}} \newcommand{\gammaB}{\boldsymbol{\gamma}} \newcommand{\deltaB}{\boldsymbol{\delta}} \newcommand{\epsilonB}{\boldsymbol{\epsilon}} \newcommand{\varepsilonB}{\boldsymbol{\varepsilon}} \newcommand{\zetaB}{\boldsymbol{\zeta}} \newcommand{\etaB}{\boldsymbol{\eta}} \newcommand{\thetaB}{\boldsymbol{\theta}} \newcommand{\varthetaB}{\boldsymbol{\vartheta}} \newcommand{\iotaB}{\boldsymbol{\iota}} \newcommand{\kappaB}{\boldsymbol{\kappa}} \newcommand{\lambdaB}{\boldsymbol{\lambda}} \newcommand{\muB}{\boldsymbol{\mu}} \newcommand{\nuB}{\boldsymbol{\nu}} \newcommand{\xiB}{\boldsymbol{\xi}} \newcommand{\piB}{\boldsymbol{\pi}} \newcommand{\varpiB}{\boldsymbol{\varpi}} \newcommand{\rhoB}{\boldsymbol{\rho}} \newcommand{\varrhoB}{\boldsymbol{\varrho}} \newcommand{\sigmaB}{\boldsymbol{\sigma}} \newcommand{\varsigmaB}{\boldsymbol{\varsigma}} \newcommand{\tauB}{\boldsymbol{\tau}} \newcommand{\upsilonB}{\boldsymbol{\upsilon}} \newcommand{\phiB}{\boldsymbol{\phi}} \newcommand{\varphiB}{\boldsymbol{\varphi}} \newcommand{\chiB}{\boldsymbol{\chi}} \newcommand{\psiB}{\boldsymbol{\psi}} \newcommand{\omegaB}{\boldsymbol{\omega}} $ $ \newcommand{\GammaB}{\boldsymbol{\Gamma}} \newcommand{\DeltaB}{\boldsymbol{\Delta}} \newcommand{\ThetaB}{\boldsymbol{\Theta}} \newcommand{\LambdaB}{\boldsymbol{\Lambda}} \newcommand{\XiB}{\boldsymbol{\Xi}} \newcommand{\PiB}{\boldsymbol{\Pi}} \newcommand{\SigmaB}{\boldsymbol{\Sigma}} \newcommand{\UpsilonB}{\boldsymbol{\Upsilon}} \newcommand{\PhiB}{\boldsymbol{\Phi}} \newcommand{\PsiB}{\boldsymbol{\Psi}} \newcommand{\OmegaB}{\boldsymbol{\Omega}} $