# Element - `ÞA`

- Adjacency matrix (Undirected)

## Description

Adjacency matrix of undirected graph

## Overloads

`lst`

-`adjacency matrix of undirected graph (where a = [[i, j] for each edge i to j])`

## Examples

`⟨⟨1|5⟩|⟨2|4⟩|⟨3|4⟩|⟨4|4⟩⟩ ÞA`

=`⟨⟨0|0|0|0|1⟩|⟨0|0|0|1|0⟩|⟨0|0|0|1|0⟩|⟨0|1|1|2|0⟩|⟨1|0|0|0|0⟩⟩`

`⟨⟨1|3⟩⟩ ÞA`

=`⟨⟨0|0|1⟩|⟨0|0|0⟩|⟨1|0|0⟩⟩`

`⟨⟩ ÞA`

=`⟨⟨0⟩⟩`