Is it possible to tell Math.js to use \times instead of \cdot when converting an expression to TeX?

[p1ckle-rick]

math.parse('1 * 2').toTeX() outputs 1 \times 2 instead of 1 \cdot 2

[gwhitney]

The below code should show you the possibilities. You can set the .toTex property on multiply, but it only affects function-call-style expressions, not infix-operator expressions. To get those, you need to use the 'options' argument of .toTex() with a function that detects an OperatorNode with function multiply.

math.multiply.toTex = '${args[0]} \\times ${args[1]}'
const tree1 = math.parse('1*2')
const tree2 = math.parse('multiply(1,2)')
console.log(tree1.toTex())  // 1\cdot2
console.log(tree2.toTex())  // 1 \times 2 
console.log(tree1.toTex({handler: (node,options) => {
    if (node.type === 'OperatorNode' && node.fn === 'multiply') {
        return node.args.map(node => node.toTex(options)).join(' \\times ')
    }
}}))  // 1 \times 2