[ahini21 (OP)]

Can we consider in all cases that the inside of an inside thing is someyhing outside of the main thing? , of course dealing with characteristics and properties.

This could be of great help to research matching the sign (-) to Inside and (+)to Outside


change and die, or die for change

[rosy]

This reminds me of a joke... an engineer, a physicist and a mathematician are asked to use as little fencing material as possible to enclose 40 sheep (which need at least, say, 10 m2 each.. an arbitrary figure, I know nothing of sheep). The engineer makes a square enclosure, 20 m x 20 m using 80m of fence.
The physicist says "I can do better than that" and makes a circular enclosure of radius 11.3 m using 70.9 metres of fence.
The mathematician looks at these goings on in amazement. When his turn comes, he builds an enclosing fence just a couple of metres in length and says "I define the sheep to be inside".

[lightarrow]

Very funny Rosy!

I could do even better, however, since you didn't pose conditions about the geometry of the surface: I can put the sheeps inside a hole in the ground, e.g. emispherical; the total area of the surface can be made equal to 400 m^2, but the fence lenght is < 2*(pi)SQRT[400/(pi)].

[lightarrow]

Another of those jokes:

an engineer, a physicist and a mathematician are put in prison, in separate cells and they all have canned food only for eating .

The engineer finds the weak point of the can's structure, hits it against the wall and opens it.

The physicist use the lamp's heat to increas the can's inner pressure and opens it.

Some days later, they hear the mathematician's voice saying:
"let's suppose for absurd the can is open..."

[lightarrow]

Another of those jokes:

an engineer, a physicist and a mathematician are put in prison, in separate cells and they all have canned food only for eating .

The engineer finds the weak point of the can's structure, hits it against the wall and opens it.

The physicist use the lamp's heat to increas the can's inner pressure and opens it.

Some days later, they hear the mathematician's voice saying:
"let's suppose for absurd the can is open..."

[ScouseLad]

i dont get any of this lmao