Issues

• Datarecord alignment

  meta
  energy-models/mathspec#944 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  3

• Use curve operator instead of having piecewise and sos2 constraint sections

  design: open
  energy-models/mathspec#943 · Filter by author brynpickering opened on Oct 22, 2026
  1

• Extend where to parameters/relations

  design: open
  energy-models/mathspec#941 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  1

• Cased missing

  design: open
  energy-models/mathspec#940 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  1

• relations -> properties

  design: open
  energy-models/mathspec#939 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  1

• Expand dtypes beyond those that can be used in math

  design: open
  energy-models/mathspec#938 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  1

• Limit expression / constraint to rows without breakpoints

  design: open
  energy-models/mathspec#937 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord

• Define piecewise x breakpoint values as extra data in parameters

  design: open
  energy-models/mathspec#936 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  1

• Enable multi-dimensions

  design: open
  energy-models/mathspec#935 · Filter by author brynpickering opened on Oct 22, 2026 · Align to datarecord
  6

• Two variables whose where: names each other load, although neither can say where the other exists

  bug
  energy-models/mathspec#928 · Filter by author FBumann opened on Oct 21, 2026

• Three follow-ups on open PRs: freeze the spec models, honour exclude={'version'}, and sort a relation's key columns by dimension

  energy-models/mathspec#922 · Filter by author FBumann opened on Oct 21, 2026

• Too many different words for referencing a condition string

  design: accepted
  energy-models/mathspec#910 · Filter by author brynpickering opened on Oct 20, 2026

• A curve stated as lines over links with different dimensions loads, and then its expansion is refused

  bug
  energy-models/mathspec#891 · Filter by author FBumann opened on Oct 16, 2026

• The canonical form keeps cases and relation columns in file order, so two files that state one spec differ in it

  bug
  energy-models/mathspec#890 · Filter by author FBumann opened on Oct 16, 2026

• assumptions can be used to enforce absence

  energy-models/mathspec#876 · Filter by author brynpickering opened on Oct 12, 2026
  1

• assumptions can check for completeness of expressions / constraints

  energy-models/mathspec#866 · Filter by author brynpickering opened on Oct 10, 2026

• Decide before 1.0.0 whether the language keeps macros

  v1.0.0
  energy-models/mathspec#865 · Filter by author FBumann opened on Oct 9, 2026

• A parameter value that is infinite is refused when the data is attached, now that missing: says what a missing row means

  v0.5.0
  energy-models/mathspec#863 · Filter by author FBumann opened on Oct 8, 2026
  1

• A fragment cannot divide by an expression it reads under given:, even one a sibling defines from parameters only

  design: open
  energy-models/mathspec#862 · Filter by author willu47 opened on Oct 8, 2026
  9

• fix(language): a neutral parameter as a divisor, a bound or a constant side is refused at load

  bug
  energy-models/mathspec#861 · Filter by author FabianHofmann opened on Oct 7, 2026

• ordered: false over an ordered dimension loads in a merge and is refused in a patch

  bug
  energy-models/mathspec#860 · Filter by author FabianHofmann opened on Oct 7, 2026

• The example specs are not in the canonical form, and no gate checks it

  energy-models/mathspec#859 · Filter by author FabianHofmann opened on Oct 7, 2026

• Design: squeeze, specializing a spec by removing a dimension

  design: open
  energy-models/mathspec#854 · Filter by author FBumann opened on Oct 6, 2026
  6

• pypsa_split writes ordered only in fragments that step along the dimension

  energy-models/mathspec#846 · Filter by author FabianHofmann opened on Oct 6, 2026

• Extra features for typesetting when using markdown and building with MKDocs / Zensical

  area: typesettingdocs
  energy-models/mathspec#845 · Filter by author brynpickering opened on Oct 6, 2026