Cleared 1m ago · stan-dev/math #3361 · C++ · ★ 832 · BSD-3-Clause

Feature request: `row_centred_matrix` and `column_centred_matrix`

To facilitate working with the sum-to-zero constraint in multivariate contexts, it would be valuable to be able to specify not only individual sum_to_zero_vectors but also matrices for which all rows or all columns are constrained to sum to zero. To my knowledge, there is no…

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