richard314159: Square root
richard314159: Analysis
richard314159: Nettles pushing through
richard314159: Six pointed star
richard314159: Moiré fan
richard314159: Grid over grass
richard314159: Diagonalisation
richard314159: Negative universe
richard314159: Pinwheel tiling (part)
richard314159: Infinite path in a tree
richard314159: Kissing curves