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Questions tagged [singularities]

Use this tag for questions about singularities in physical quantities, i.e. cases where a quantity becomes or appears to become infinite or ill-defined. Consider the more specific tags [black-holes] and [wormholes] for certain kinds of singularities occurring in general relativity. For the procedure of "getting rid" of singularities, consider the [regularization] tag.

Use this tag for questions about singularities in physical quantities, i.e. cases where a quantity becomes or appears to become infinite or ill-defined. Consider the more specific tags and for certain kinds of singularities occurring in . For the procedure of "getting rid" of singularities, consider the tag.

962 questions
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Difference between space-like and time-like singularities

See the Wikipedia article on Penrose-Hawking singularity theorems. It says that A singularity in solutions of the Einstein field equations is one of two things: 1. a situation where matter is forced to be compressed to a point (a space-like…
nightmarish
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Is the vortex in a kitchen sink an example of a singularity?

Say you have your kitchen sink full of water and you pull the plug. Then a nice little vortex will form where the water disappears into the drain. My question is: Is this an example of a mathematical singularity occurring in real life? And if it…
a student
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Singularities in black holes

I've read that a singularity is formed when the increasing gravity of a collapsing star overcomes its increasing density, resulting in an infinitely dense "point" of zero dimensions. But the mathematics seems to say the opposite. Newton's famous…
P. Martin
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Singularity of spacetime and singularity of the riemanian tensor scalar

It's easy to show that a singularity of the riemanian tensor scalar $R_{\alpha \beta \mu \nu} R^{\alpha \beta \mu \nu}$ leads to a singularity of the spacetime. But what about the other way round? Is it possible to proof that each singularity of…
Alpha001
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Are there any real examples of Infinite, or possible infinite, in our universe?

infinite small or large, infinite slow or fast, infinite long time or short, any kind of infinite counts. Are there any real-life example out of Math, that is infinite? This is the whole knowledge I know now: size: I know Planck length is the…
WonderWilson
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