7

Took my photographic attention, just this 7 on a pillar in the train station. No idea of the meaning. Probably some practical meaning, nothing to do with numerology.

Just started to surf a bit about the meaning of numbers and an almost endless world of meanings and symbolisms open.

In mathematics the only number that cannot be created by multiplication/division of the first 10 numbers:
1 = 10:10
2 = 10:5
3 = 9:3
4 = 2x2
5 = 10:2
6 = 2x3
7 = ?
8 = 4x2
9 = 3x3
10 = 2x5

In medieval symbolism representing completeness or perfection. Combining the 3 spiritual elements (trinity) with the world (4 elements).

Seven colours in the rainbow.

And, and, and ...