diff --git a/Math/Optimization/Graph/Graph.php b/Math/Optimization/Graph/Graph.php
deleted file mode 100644
index 1cd85c6c3..000000000
--- a/Math/Optimization/Graph/Graph.php
+++ /dev/null
@@ -1,222 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 7.1
- *
- * @category   TBD
- * @package    TBD
- * @copyright  Dennis Eichhorn
- * @license    OMS License 1.0
- * @version    1.0.0
- * @link       http://orange-management.com
- */
-declare(strict_types=1);
-
-namespace phpOMS\Math\Optimization\Graph;
-
-use phpOMS\Stdlib\Map\KeyType;
-use phpOMS\Stdlib\Map\MultiMap;
-use phpOMS\Stdlib\Map\OrderType;
-
-/**
- * Graph class
- *
- * @category   Framework
- * @package    phpOMS\Asset
- * @license    OMS License 1.0
- * @link       http://orange-management.com
- * @since      1.0.0
- */
-class Graph
-{
-    /**
-     * Vertices.
-     *
-     * @var VerticeInterface[]
-     * @since 1.0.0
-     */
-    private $vertices = [];
-
-    /**
-     * Edge.
-     *
-     * @var EdgeInterface[]
-     * @since 1.0.0
-     */
-    private $edges = null;
-
-    /**
-     * Constructor
-     *
-     * @since  1.0.0
-     */
-    public function __construct()
-    {
-        $this->edges = new MultiMap(KeyType::MULTIPLE, OrderType::LOOSE);
-    }
-
-    /**
-     * Add vertice to graph.
-     *
-     * @param VerticeInterface $vertice Vertice
-     *
-     * @return bool
-     *
-     * @since  1.0.0
-     */
-    public function addVertice(VerticeInterface $vertice) : bool
-    {
-        if (!isset($this->vertices[$vertice->getId()])) {
-            $this->vertices[$vertice->getId()] = $vertice;
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Add edge to graph.
-     *
-     * @param EdgeInterface $edge Edge
-     *
-     * @return bool
-     *
-     * @since  1.0.0
-     */
-    public function addEdge(EdgeInterface $edge) : bool
-    {
-        if (!isset($this->edges[$edge->getId()])) {
-            $this->edges[$edge->getId()] = $edge;
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Remove vertice from graph.
-     *
-     * @param mixed $id Id of vertice to remove
-     *
-     * @return bool
-     *
-     * @since  1.0.0
-     */
-    public function removeVertice($id) : bool
-    {
-        if (isset($this->vertices[$id])) {
-            unset($this->vertices[$id]);
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Remove edge by nodes from graph.
-     *
-     * @param mixed $a First node of edge
-     * @param mixed $b Second node of edge
-     *
-     * @return bool
-     *
-     * @since  1.0.0
-     */
-    public function removeEdge($a, $b) : bool
-    {
-        return $this->edges->remove([$a, $b]);
-    }
-
-    /**
-     * Remove edge from graph.
-     *
-     * @param mixed $id Id of edge to remove
-     *
-     * @return bool
-     *
-     * @since  1.0.0
-     */
-    public function removeEdgeById($id) : bool
-    {
-        if (isset($this->edges[$id])) {
-            unset($this->edges[$id]);
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Get vertice.
-     *
-     * @param mixed $id Id of vertice
-     *
-     * @return VerticeInterface
-     *
-     * @since  1.0.0
-     */
-    public function getVertice($id) : VerticeInterface
-    {
-        return $this->vertices[$id] ?? new NullVertice();
-    }
-
-    /**
-     * Get edge by nodes.
-     *
-     * Order of nodes is irrelevant
-     *
-     * @param mixed $a First node of edge
-     * @param mixed $b Second node of edge
-     *
-     * @return EdgeInterface
-     *
-     * @since  1.0.0
-     */
-    public function getEdge($a, $b) : EdgeInterface
-    {
-        return $this->edges->get([$a, $b]) ?? new NullEdge();
-    }
-
-    /**
-     * Get edge by id.
-     *
-     * @param int $id Edge id
-     *
-     * @return EdgeInterface
-     *
-     * @since  1.0.0
-     */
-    public function getEdgeById(int $id) : EdgeInterface
-    {
-        return $this->edges->get($id) ?? new NullEdge();
-    }
-
-    /**
-     * Count vertices.
-     *
-     * @return int
-     *
-     * @since  1.0.0
-     */
-    public function countVertices() : int
-    {
-        return count($this->vertices);
-    }
-
-    /**
-     * Count edges.
-     *
-     * @return int
-     *
-     * @since  1.0.0
-     */
-    public function countEdges() : int
-    {
-        return count($this->edges);
-    }
-}
\ No newline at end of file