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Question: Error in Maple Search?

Question:Error in Maple Search?

RK1 160 Maple 2022
ricci differentialgeometry metricsearch
May 26 2023
2

When I look for petrov type II vacuum solutions in the Metric search, one of the metrics i get is Stephani [33,8,3].

But when I load the metric and calculate the Ricci or the Einstein tensor, they are not identically zero.
Am I using the metric search wrong or is there a glitch in the program?

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