[Tex/LaTex] Curly braces and nested arrays

arraysequations

I am trying to reproduce the equation of the image below. I am using an array environment to create the first big curly brace. I have tried to nest a second array to produce a second curly brace, but I get an error.

enter image description here

This is the code that gave me an error:

DTW(A,B)=\left\{ \begin{array}{l}
    0 \quad \text{se $n$=0 ed $m$=0}\\
    \infty \quad \text{se $n$=0 o $m$=0}\\
    d(H(A),H(B))+\min\left\{
    \begin{array}{1}
        a\\
        b\\
        c\\
    \end{array}
    \right.
  \end{array} \right.

How can I write this equation?

Best Answer

You have a typo in your inner array

change

     \begin{array}{1}
                   %%%

to

   \begin{array}{l}
                %%%
Related Question