On 2D Inverse Problems/4

The circular symmetric Spiderweb responds as , with the shift S. The self-dual network (square root of minus Laplacian response) leads to zero anti-symmetric ghost: at . Or, Exercise: prove that Works for all roots of unity or regular polygons... So Earth never returns to same spot. It's a spiral, not a circle. Hush, little itsy spider, don't you cry, Rain came down from stormy sky. Sun will come and dry your thread, Climb back up to your webby bed. Зета сбегает к единице, Сумма их в бездну стремится. Но вычти один, и в ряд сложи — 3/4 получишь для души. А если поделить на степени, `cot` расскажет все сплетения: Где π/4, где π/2, Там TP-паук плетёт дела. Itsy Bitsy Spider 🕷️ The itsy bitsy spider climbed up the water spout. Down came the rain and washed the spider out. Out came the sun and dried up all the rain And the itsy bitsy spider climbed up the spout again.