Tag Archives: boundary

Hard Boundaries, Soft Boundaries

Computer scientists use filters, ≥ signs, intersections (sql), and other forms of what I would call “hard boundaries”. Grep either finds what you’re looking for, or it doesn’t.  The condition inside your while(){ loop either trips true and the interior code … Continue reading

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At some point someone had to sit down and said “Whoah! Hold on, everyone! I just imagined an invisible something SO IMPORTANT that if you refuse to imagine the exact same thing, then we all get to kill you!” That’s some … Continue reading

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Complement

Here’s an inside-out thought: The air around us is a 3-manifold with 3-holes where solid objects are, and the 2-boundary is the ground. Or if you think of all the sky, it’s a spherical 3-shell (with one 3-hole, the Earth) floating … Continue reading

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Boundaries and Flows

Gauß’ divergence theorem states that, unless matter is created or destroyed, the density within a region of space V can change only by flowing through its boundary ∂V. Therefore i.e., you can measure the changes in an entire region by simply measuring what … Continue reading

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