Zzong's Notes

Triangle inequality

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the triangle inequality states that for any triangle, the sum of the lengths of any two sides must be greater than or equal to the length of the remaining side.

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... 같은 조건을 만족한다. Absolutely homogeneous: \|\lambda \boldsymbol{x}\|=\mid \lambda\|\| \boldsymbol{x} \| Triangle inequality: \|\boldsymbol{x}+\boldsymbol{y}\| \leqslant\|\boldsymbol{x}\|+\|\boldsymbol{y}\| Positive definite:...