has not yet been solved


Wiki: In science and mathematics, an open problem or an open question is a known problem that can be accurately stated, and has not yet been solved (no solution for it is known). Some questions remain unanswered for centuries before solutions are found.

Comments

Milton Ostetto said…
grafismo muito interessante com uma bela luz
abraço
Milton
br said…
beautifully seen,mr. urbano.
paulboo said…
Everytime a question is answered more questions are raised!!
Fabulous picture Ulf.
Rhonda said…
mysteries are oh so inviting...beautiful!
Philip said…
Looks like a spider web with morning dew, just not as elegantly woven as a spider could do. Nice noticing.