Upside Down Delta Meaning 2025 Dates. Uranus wants change now & taurus doesn’t want to budge… well life as we know it can get turned upside down, inside out in the blink of an eye. The symbol is variously referred to as partial, curly d, rounded d, curved d, dabba, or jacobi's delta, or as del (but this name is also used for the nabla symbol ∇).

Navigate mercury retrograde in 2025 with ease. (the usual meaning of $\nabla^2 f$ is the laplacian,.