Let’s work through this with the following label: Dm$$\left.\text{}{\Delta}\right.$$11.
Dm means D–F–A. The $$\left.\text{}{\Delta}\right.$$11 means there is a major 7th, regular 9th, and regular 11th, not that there is a major 11th. Remember, D11 would mean a D7 chord with the 9 and 11 (all chord members up to the 11th—D, F♯, A, C, E, G). D$$\left.\text{}{\Delta}\right.$$11 would mean a D$$\left.\text{}{\Delta}\right.$$7 chord with all members up to the 11 (D, F♯, A, C♯, E, G).
Let’s try this with another chord: E7$$\left.\text{}\left(\begin{smallmatrix}\text{♯11}\\\text{♯9}\\\text{♯5}\end{smallmatrix}\right)\right.$$.