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Prep for v1.53.1 #3077

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Prep for v1.53.1
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2 changes: 1 addition & 1 deletion Project.toml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
name = "MathOptInterface"
uuid = "b8f27783-ece8-5eb3-8dc8-9495eed66fee"
version = "1.53.0"
version = "1.53.1"

[deps]
CodecBzip2 = "523fee87-0ab8-5b00-afb7-3ecf72e48cfd"
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26 changes: 26 additions & 0 deletions docs/src/changelog.md
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Expand Up @@ -7,6 +7,32 @@ CurrentModule = MathOptInterface
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## v1.53.1 (September 8, 2026)

### Fixed

- Lowered the conversion cost for [`VariableIndex`](@ref) to [`ScalarAffineFunction`](@ref)
in `Bridges.Constraint.FunctionConversionBridge` to `0.5`. This should reduce
the complexity of some conic reformulations (#3063)
- Fixed tests of infeasible problems to also return `INFEASIBLE_OR_UNBOUNDED`
(#3066)
- Fixed bugs in various bridges to do with non-zero function constants. These
typically affected [`ConstriantPrimal`](@ref) and
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[`ConstraintPrimalStart`](@ref) (#3069)
- Fixed a bug in the LP writer when there are functions with no terms (#3070)
- Fixed the derivative of `atan(y, x)` in `Nonlinear.SymbolicAD` (#3071)
- Fixed the Hessian computation for `min` and `max` operators (#3072)
- Fixed modifying [`Bridges.Constraint.SplitIntervalBridge`](@ref) when the
set was `Interval(-Inf, Inf)` (#3073)
- Fixed [`Bridges.Constraint.SplitHyperRectangleBridge`](@ref) when some rows
have bounds `(-Inf, Inf)` (#3075)
- Fixed getting and setting [`ConstraintPrimalStart`](@ref) in scalar
constraints when there are bridged variables (#3076)

### Other

- Fixed formatting indent of multiline strings in `test/` (#3064)
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## v1.53.0 (August 24, 2026)

### Added
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