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add functionality to interpolate in look-up tables

Status: Open.

#3365 In stan-dev/math;

· bmelinden opened on Aug 21, 2026

Derive log CDF and log CCDF of transformed distributions from std_log_lcdf

Status: Open.

#3364 In stan-dev/math;

· jaburgoyne opened on Aug 21, 2026

Add ITP one dimensional solver

Status: Open.

Feature

#3362 In stan-dev/math;

· spinkney opened on Aug 21, 2026

Feature request: row_centred_matrix and column_centred_matrix

feature

good first issue

Status: Open.

#3361 In stan-dev/math;

· jaburgoyne opened on Aug 18, 2026

add is_even and is_odd here and to Stan

good first issue

Status: Open.

#3349 In stan-dev/math;

· bob-carpenter opened on Jul 20, 2026

Error when compiling laplace_marginal_tol() in multi-thread Stan models

bug

Status: Open.

#3359 In stan-dev/math;

· gaoyingnan-academic opened on Jul 13, 2026

Scans and reduction functions

feature

new function

Status: Open.

#3340 In stan-dev/math;

· WardBrian opened on Jun 30, 2026

wiener_lpdf full model returns -inf for valid-support inputs in variability branches

Status: Open.

#3329 In stan-dev/math;

· martonaronvarga opened on Jun 4, 2026

wiener_lpdf reverse-mode derivative wrt w disagrees with finite differences of Stan Math value

Status: Open.

#3322 In stan-dev/math;

· martonaronvarga opened on May 12, 2026

Redundant function multiply_log vs. lmultiply

Status: Open.

#3318 In stan-dev/math;

· jachymb opened on May 10, 2026

test multithreading on exp using TBB

Status: Open.

#3311 In stan-dev/math;

· drezap opened on Apr 23, 2026

Laplace tests taking too long in develop Jenkins runs

continuous integration

Status: Open.

#3309 In stan-dev/math;

· WardBrian opened on Apr 21, 2026