Changes needed for doenet integration - #84
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Update 21 expected values to match current ast-to-latex output: fewer
exponent braces (d^{2} -> d^2), parenthesized unary +/- (a++b -> a+(+b)),
and angle notation (\angleABC -> \angle(A,B,C)).
Co-Authored-By: Claude <noreply@anthropic.com>
Three phases, taking spec/slow_assumptions from 565 to 5 failures:
1. Predicates in element_of_sets defaulted to an empty Assumptions handle,
so every no-argument query (is_real(me.fromText("x+y"))) ignored the
global store and answered unknown. Default to the context's live handle.
2. Rust engine: negated assumptions, constant folding before structural
inference, sign normalization, zero-factor/complex-closure rules, and
function domain facts. infer.rs split into infer/ per file-size convention.
3. Rebuild get_assumptions to return an oriented AST with transitive closure,
interval-membership and subset/superset expansion.
Co-Authored-By: Claude <noreply@anthropic.com>
Current state and remaining buckets after the assumptions, polynomial, and latex-expectation work: 1166 -> 380 failing. Co-Authored-By: Claude <noreply@anthropic.com>
variables.ts, default_order.ts, linear.ts and logical.ts each decided a mathematical result in JS that the core already computed: the variable walk, the legacy sort key, linear isolation, and the not-pushdown. All four are now marshalling shims over new bindings (-341 lines of JS). Two gaps surfaced while wiring them up: ops::query::operators reported only a fixed operator whitelist, not every array head as the JS did. expression_to_polynomial whitelists operators, so an unreported `tuple` made (3,4) parse as a polynomial. Now a faithful port. grade::linear_decomposition has to reject exact fractions, matching the JS `typeof tree === "number"` test. The rejection is load-bearing: when the decomposition fails, get_assumptions_for_expr falls back to per-variable facts, and that fallback is where transitive consequences come from. Co-Authored-By: Claude <noreply@anthropic.com>
Relation expansion, the operator-composition table, the transitive closure,
per-variable filing and canonical form all lived in JS. None had a Rust
counterpart, so these are genuine ports rather than exposure:
assumptions/{expand,clean,derive/*,tree_store/*}.
Assumptions now carries a TreeStore beside its inference store; the wasm class
gains AST-JSON entry points so the query shape — a name, [["a","b"]], or an
expression — is decided in Rust rather than sniffed in JS. store.ts keeps only
handle marshalling, the glue exception the plan names.
-806 lines of JS. Suite unchanged at 379 failing, zero name-level movement in
either direction; slow_assumptions stays 839/5.
Three details that had to be preserved rather than tidied:
byvar is insertion-ordered, not a map — the closure iterates it to build a
conjunction and the key order reaches that tree before default_order sorts it.
A variable met with no facts differs from one never seen: only the latter picks
up the generic assumption. Modelled as Facts::{Absent, Empty, Tree}.
The closure reads the previous derived map while recomputing it, and
clean_assumptions can return a childless ["and"]. Both are observable through
me.assumptions.derived.
Co-Authored-By: Claude <noreply@anthropic.com>
The last of the JS math: 2141 lines of commutative algebra — multivariate division, Buchberger, lcm by ideal intersection, gcd, rational reduction, and a duplicate of every algorithm for a second encoding — replaced by a 136-line marshalling shim over polynomials::compat. The engine is new rather than a reuse of multivariate.rs because coefficients here are not rationals: expression_to_polynomial counts pi, e and i as numbers, so 9x^(2/3) - pi*x has the coefficient ["-", "pi"]. Variables are Expr trees compared structurally, which is why sin(x) is already one variable and stringify_vars/destringify_vars disappeared instead of moving. ratform::cancel could not back reduce_rational_expression: on (t^100-t)/t it returns t^(-1)(t^100 - t) rather than cancelling, it hands back a product with a reciprocal instead of a numerator/denominator pair, and being dense over Q it cannot represent the t^1000000 rows at all. slow_polynomial stays 205/205 with no spec expectation touched, and runs in 0.16s instead of dominating the suite. Three JS warts were not reproduced, none reachable from the spec: multiplying zero by a polynomial read p[1] off a number, negating a zero polynomial returned false, and mono_gcd on two variables the default order cannot separate looped forever. Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Claude <noreply@anthropic.com>
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This PR makes changes the AI said were needed for integration of the new version of math-expressions into Doenet