bboldx

The bboldx extension implements the bboldx style package from LaTeX, which makes alternative black-board bold characters available in TeX. This includes not just the alphabetic and numeric characters, but also for some punctuation, and macros for Greek upper- and lower-case letters, along with several delimiters. See the bboldx CTAN page for more information and documentation.

This package redefines the \mathbb macro to use one of the bboldx fonts, based on the options described below. This will typeset letters, numbers, and some punctuation using the bboldx fonts. To get the Greek letters, however, you must use macros like \bbGamma and \bbalpha. The complete set is:

Uppercase Greek:

• \bbGamma

• \bbDelta

• \bbTheta

• \bbLambda

• \bbXi

• \bbPi

• \bbSigma

• \bbUpsilon

• \bbPhi

• \bbPsi

• \bbOmega

Lower Case Greek

• \bbalpha

• \bbbeta

• \bbgamma

• \bbdelta

• \bbepsilon

• \bbzeta

• \bbeta

• \bbtheta

• \bbiota

• \bbkappa

• \bblambda

• \bbmu

• \bbnu

• \bbxi

• \bbpi

• \bbrho

• \bbsigma

• \bbtau

• \bbupsilon

• \bbphi

• \bbchi

• \bbpsi

• \bbomega

Dotless i and j

• \bbdotlessi

• \bbdotlessj

If the textmacros extension is loaded, then the bboldx extension will define text-based versions of the Greek commands as well, prefixed by txt and txtbf. E.g., \txtbbalpha and \txtbbfbbalpha can be used in \text{} to get bboldx versions of the alpha in normal and bold styles. The dotless i and j can be obtained from \itextbb, \itexstbfbb, \jtextbb, and \jtextbbf.

The bboldx extension also creates the delimiters \bbLparen, \bbRparen, \bbLbrack, \bbRbrack, \bbLangle, and \bbRangle, but since the fonts don’t include any of the larger versions or the pieces needed to make stretchy assemblies, these don’t work with \left and \right, and will just produce the normal stretchy parentheses, brackets, and angle brackets.

The normal versions of these fonts are shown below:

These are the bold versions:

These are the light versions:

This package is not autoloaded, so you must request it explicitly if you want to use it. To load the bboldx extension, add '[tex]/bboldx' to the load array of the loader block of your MathJax configuration, and add 'bboldx' to the packages array of the tex block.

window.MathJax = {
  loader: {load: ['[tex]/bboldx']},
  tex: {packages: {'[+]': ['bboldx']}}
};

Alternatively, use \require{bboldx} in a TeX expression to load it dynamically from within the math on the page, if the require extension is loaded.

---

bboldx Options

Adding the bboldx extension to the packages array defines an bboldx sub-block of the tex configuration block with the following values:

MathJax = {
  tex: {
    bboldx: {
      bfbb: false,
      light: false
    }
  }
};

bfbb: false

Specifies whether to use the bold-weight versions of the bboldx fonts.

light: false

Specifies whether to use the light-weight versions of the bboldx fonts.

---

bboldx Commands

The bboldx extension implements the following macros: \bbalpha, \bbbeta, \bbchi, \bbDelta, \bbdelta, \bbdotlessi, \bbdotlessj, \bbepsilon, \bbeta, \bbGamma, \bbgamma, \bbiota, \bbkappa, \bbLambda, \bblambda, \bbLangle, \bbLbrack, \bbLparen, \bbmu, \bbnu, \bbOmega, \bbomega, \bbPhi, \bbphi, \bbPi, \bbpi, \bbPsi, \bbpsi, \bbRangle, \bbRbrack, \bbrho, \bbRparen, \bbSigma, \bbsigma, \bbtau, \bbTheta, \bbtheta, \bbUpsilon, \bbupsilon, \bbXi, \bbxi, \bbzeta, \bfbbalpha, \bfbbbeta, \bfbbchi, \bfbbDelta, \bfbbdelta, \bfbbdotlessi, \bfbbdotlessj, \bfbbepsilon, \bfbbeta, \bfbbGamma, \bfbbgamma, \bfbbiota, \bfbbkappa, \bfbbLambda, \bfbblambda, \bfbbLangle, \bfbbLbrack, \bfbbLparen, \bfbbmu, \bfbbnu, \bfbbOmega, \bfbbomega, \bfbbPhi, \bfbbphi, \bfbbPi, \bfbbpi, \bfbbPsi, \bfbbpsi, \bfbbRangle, \bfbbRbrack, \bfbbrho, \bfbbRparen, \bfbbSigma, \bfbbsigma, \bfbbtau, \bfbbTheta, \bfbbtheta, \bfbbUpsilon, \bfbbupsilon, \bfbbXi, \bfbbxi, \bfbbzeta, \imathbb, \imathbfbb, \jmathbb, \jmathbfbb, \mathbb, \mathbfbb

The bboldx extension implements the following text-mode macros when the textmacros extension is loaded (these are only available inside \text{} or other text-mode macros): \itextbb, \itextbfbb, \jtextbb, \jtextbfbb, \textbb, \textbfbb, \txtbbalpha, \txtbbbeta, \txtbbchi, \txtbbDelta, \txtbbdelta, \txtbbdotlessi, \txtbbdotlessj, \txtbbepsilon, \txtbbeta, \txtbbGamma, \txtbbgamma, \txtbbiota, \txtbbkappa, \txtbbLambda, \txtbblambda, \txtbbLangle, \txtbbLbrack, \txtbbLparen, \txtbbmu, \txtbbnu, \txtbbOmega, \txtbbomega, \txtbbPhi, \txtbbphi, \txtbbPi, \txtbbpi, \txtbbPsi, \txtbbpsi, \txtbbRangle, \txtbbRbrack, \txtbbrho, \txtbbRparen, \txtbbSigma, \txtbbsigma, \txtbbtau, \txtbbTheta, \txtbbtheta, \txtbbUpsilon, \txtbbupsilon, \txtbbXi, \txtbbxi, \txtbbzeta, \txtbfbbalpha, \txtbfbbbeta, \txtbfbbchi, \txtbfbbDelta, \txtbfbbdelta, \txtbfbbdotlessi, \txtbfbbdotlessj, \txtbfbbepsilon, \txtbfbbeta, \txtbfbbGamma, \txtbfbbgamma, \txtbfbbiota, \txtbfbbkappa, \txtbfbbLambda, \txtbfbblambda, \txtbfbbLangle, \txtbfbbLbrack, \txtbfbbLparen, \txtbfbbmu, \txtbfbbnu, \txtbfbbOmega, \txtbfbbomega, \txtbfbbPhi, \txtbfbbphi, \txtbfbbPi, \txtbfbbpi, \txtbfbbPsi, \txtbfbbpsi, \txtbfbbRangle, \txtbfbbRbrack, \txtbfbbrho, \txtbfbbRparen, \txtbfbbSigma, \txtbfbbsigma, \txtbfbbtau, \txtbfbbTheta, \txtbfbbtheta, \txtbfbbUpsilon, \txtbfbbupsilon, \txtbfbbXi, \txtbfbbxi, \txtbfbbzeta

---