v5.0.0

This release moves term representation over to Unityper.

v4.14.0

Symbolics v4.14.0

Diff since v4.13.0

Closed issues:

• Improper use of similarterm in scalarize (#704)
• substitute does not work for denominators (#766)
• scalarize(T[]) where {T <: Number} returns Any[] (#768)
• MethodError: no method matching length(::SymbolicUtils.Term{Any, Nothing}) (#780)
• Potential improvements on reducing memory usage (#785)
• Feature request: obtaining vectorized expression from an array of expressions (#793)
• simplify does not simplify simple expression (#798)

Merged pull requests:

• Add the documented keyword argument force_SA (#756) (@baggepinnen)
• Included a link to rewriter documentation in Symbolics.jl (#769) (@thomastjdavis)
• [skip ci] update badges (#770) (@ArnoStrouwen)
• include more test files (#771) (@ArnoStrouwen)
• @example documentation (#775) (@ArnoStrouwen)
• add a variablemetadata supertype for downstream metadata types (#783) (@anandijain)
• doc and test compat (#792) (@ArnoStrouwen)
• Update the documentation and add an example (#801) (@ChrisRackauckas)
• Add a function to parse Julia expressions into symbolic expressions (#808) (@ChrisRackauckas)

v4.13.0

Symbolics v4.13.0

Diff since v4.12.0

Merged pull requests:

• Add iip_config option (#765) (@YingboMa)

v4.12.0

Symbolics v4.12.0

Diff since v4.11.1

Closed issues:

• Handling of Inequalities (#630)

Merged pull requests:

• adds Inequality (#717) (@ValentinKaisermayer)
• Add SciML/ModelOrderReduction.jl to downstream integration test (#762) (@bowenszhu)
• Fix MIME"text/latex" output to ensure it's in a TeX environment (#763) (@ChrisRackauckas)

v4.11.1

Symbolics v4.11.1

Diff since v4.11.0

Closed issues:

• sparse_hessian without @variables (#758)

Merged pull requests:

• fix type parameter declaration (#736) (@nsajko)
• Update docstring jacobian_sparsity and hessian_sparsity (#760) (@bowenszhu)

v4.11.0

Symbolics v4.11.0

Diff since v4.10.4

Closed issues:

• Extracting degree and coefficients of a polynomial (#216)
• SymPy x.coeff like functionality (#374)
• Arrays of symbolic terms break basic arithmetic (#691)
• Inconsistent use of kwarg slurping breaks MTK callback conditions (#697)
• Q: extracting coefficients and monomial degrees from multivariate polynomials (#699)
• 1 instead of true (#702)
• Symbolics and Latexify (#722)
• How can I make dynamically named variables? (#739)
• Limitations of symbolic tracing? (#746)
• Large number of variables for PDESystem (#751)
• Avoiding repeated compilation in for loops (#752)

Merged pull requests:

• implement coeff (#677) (@t-bltg)
• Refactor degree & coeff for Add & Mul (#685) (@bowenszhu)
• make kwarg slurping the same across Julia target methods (#698) (@wsphillips)
• Add sparsejacobian_vals function (#710) (@tmigot)
• Latexify (#724) (@gustaphe)
• Equation solver (#733) (@blankBuffer)
• Fix hessian_sparsity docstring signature (#750) (@bowenszhu)
• Make linear_expansion handle / (#754) (@YingboMa)
• Handle getname edge case (#755) (@YingboMa)

v4.10.4

Symbolics v4.10.4

Diff since v4.10.3

Closed issues:

• Need Help .I have several questions (#652)
• Fix downstream MTK failures (Jul 26) (#669)
• Q: Lie series method for PDEs (#672)
• semipolynomial_form fails to process internal structure properly (#679)
• semipolynomial_form ignores non-integer exponent (#680)
• semipolynomial_form with flag const = false doesn't work in an edge case (#681)
• Result of semipolynomial_form does not match input degree (#682)
• semipolynomial_form does not work with nested ^ operation (#684)
• Symbolics.jl | Interfacing - building an expression tree to use custom rules (#687)
• Q: composition rules for differential operators? (#689)
• Symbolic matrix exponential (#690)

Merged pull requests:

• update docs for semipoly.jl (#675) (@shashi)
• Fix and refactor semipolynomial_form (#678) (@bowenszhu)
• Fix the first tutorial... (#688) (@ChrisRackauckas)
• RefValue handling in symtype inference (#696) (@shashi)

v4.10.3

Symbolics v4.10.3

Diff since v4.10.2

Closed issues:

• Use x(t)[1] instead of x1 in @variables x[1:10](t) (#569)
• Make semipolynomial_form include nonzero constant as a 0-degree monomial (#663)
• Vector variables missing in ODEProblem (#670)

Merged pull requests:

• WIP: constants as 0 degree monomials in semipolynomial form (#668) (@shashi)
• Add tests for constant term (#674) (@shashi)

v4.10.2

Symbolics v4.10.2

Diff since v4.10.1

Merged pull requests:

• Fix wrapping in scalarize, fix metadata propagation (#671) (@shashi)

v4.10.1

Symbolics v4.10.1

Diff since v4.10.0

Merged pull requests:

• Fix Symbolic type of residual from semipolynomial_form with a single non-polynomial no-addition input (#665) (@bowenszhu)