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9ba0a324142e57bc480926e6a791523bdc72957c: $$
\color{red} \sigma_{11}
2560c595170ab953d96cb55d46b6ddd1f57ff89b: $$
D
2c68676f1834d87430e78e5e2b9cb27f4ef61dd6: $$
h/2