# Browse Dissertations and Theses - Mathematics by Contributor "Alexander, Stephanie B"

• (2017-06-06)
A space-time satisfies $\mathcal{R} \geq K$ if the sectional curvatures are bounded below by $K$ for spacelike planes and above by $K$ for timelike planes (similarly, a space-time satisfies $\mathcal{R} \leq K$ if the ...

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