Numerian is a visual mathematics vector calculator with 2D graphing; vector and matrix; and trigonometry and algebra support. Unlike a ordinary calculator, Numerian uses a graphical, node-based input format. Simply drag the math nodes onto the screen, hold a node to access the wire screen, and then wire up the connections from one node to another. This method enables the use of a single tappable number icon, to hold an entire 20x20 matrix, or a 20x1 vector -- either of which would fill up the screen on a regular calculator! Usage Nodes: Tap: Tap the number (#) node and the variable (V) nodes to change numbers or variable assignments. Hold: Hold any node to enter the wiring screen. Node inputs are at the bottom, outputs at the top. Drag from one node input/output to another node output/input to create a connection. Add/Delete: Drag nodes from the lower bar to add, to the lower bar to delete.