Datasets:
Dataset Viewer
The dataset viewer is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code: StreamingRowsError
Exception: CastError
Message: Couldn't cast
schema_version: int64
generated_at: timestamp[s]
scope: struct<included: string, theory_targets: int64, excluded: string>
child 0, included: string
child 1, theory_targets: int64
child 2, excluded: string
results: list<item: struct<name: string, github_repository: string, github_branch: string, github_commit: str (... 103 chars omitted)
child 0, item: struct<name: string, github_repository: string, github_branch: string, github_commit: string, formal (... 91 chars omitted)
child 0, name: string
child 1, github_repository: string
child 2, github_branch: string
child 3, github_commit: string
child 4, formalized_and_proved: int64
child 5, total: int64
child 6, lean_build: string
child 7, active_proof_placeholders: int64
fixedToolchain: bool
lakeDir: string
version: string
packages: list<item: struct<url: string, type: string, subDir: null, scope: string, rev: string, name: string, (... 78 chars omitted)
child 0, item: struct<url: string, type: string, subDir: null, scope: string, rev: string, name: string, manifestFi (... 66 chars omitted)
child 0, url: string
child 1, type: string
child 2, subDir: null
child 3, scope: string
child 4, rev: string
child 5, name: string
child 6, manifestFile: string
child 7, inputRev: string
child 8, inherited: bool
child 9, configFile: string
packagesDir: string
name: string
to
{'version': Value('string'), 'packagesDir': Value('string'), 'packages': List({'url': Value('string'), 'type': Value('string'), 'subDir': Value('null'), 'scope': Value('string'), 'rev': Value('string'), 'name': Value('string'), 'manifestFile': Value('string'), 'inputRev': Value('string'), 'inherited': Value('bool'), 'configFile': Value('string')}), 'name': Value('string'), 'lakeDir': Value('string'), 'fixedToolchain': Value('bool')}
because column names don't match
Traceback: Traceback (most recent call last):
File "/src/services/worker/src/worker/utils.py", line 149, in get_rows_or_raise
return get_rows(
dataset=dataset,
...<4 lines>...
column_names=column_names,
)
File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
return func(*args, **kwargs)
File "/src/services/worker/src/worker/utils.py", line 129, in get_rows
rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
File "/src/services/worker/src/worker/utils.py", line 489, in safe_iter
yield from ds.decode(False) if ds.features else ds
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2818, in __iter__
for key, example in ex_iterable:
^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
for key, pa_table in self._iter_arrow():
~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, in _iter_arrow
for key, pa_table in self.ex_iterable._iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
for key, pa_table in iterator:
^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
for key, pa_table in self.generate_tables_fn(**gen_kwags):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
self._cast_table(pa_table, json_field_paths=json_field_paths),
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
pa_table = table_cast(pa_table, self.info.features.arrow_schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
schema_version: int64
generated_at: timestamp[s]
scope: struct<included: string, theory_targets: int64, excluded: string>
child 0, included: string
child 1, theory_targets: int64
child 2, excluded: string
results: list<item: struct<name: string, github_repository: string, github_branch: string, github_commit: str (... 103 chars omitted)
child 0, item: struct<name: string, github_repository: string, github_branch: string, github_commit: string, formal (... 91 chars omitted)
child 0, name: string
child 1, github_repository: string
child 2, github_branch: string
child 3, github_commit: string
child 4, formalized_and_proved: int64
child 5, total: int64
child 6, lean_build: string
child 7, active_proof_placeholders: int64
fixedToolchain: bool
lakeDir: string
version: string
packages: list<item: struct<url: string, type: string, subDir: null, scope: string, rev: string, name: string, (... 78 chars omitted)
child 0, item: struct<url: string, type: string, subDir: null, scope: string, rev: string, name: string, manifestFi (... 66 chars omitted)
child 0, url: string
child 1, type: string
child 2, subDir: null
child 3, scope: string
child 4, rev: string
child 5, name: string
child 6, manifestFile: string
child 7, inputRev: string
child 8, inherited: bool
child 9, configFile: string
packagesDir: string
name: string
to
{'version': Value('string'), 'packagesDir': Value('string'), 'packages': List({'url': Value('string'), 'type': Value('string'), 'subDir': Value('null'), 'scope': Value('string'), 'rev': Value('string'), 'name': Value('string'), 'manifestFile': Value('string'), 'inputRev': Value('string'), 'inherited': Value('bool'), 'configFile': Value('string')}), 'name': Value('string'), 'lakeDir': Value('string'), 'fixedToolchain': Value('bool')}
because column names don't matchNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
IPhO 2026 Lean formalization results
This dataset publishes two independent Lean 4 solution sets for the 23 theoretical subproblems of IPhO 2026:
| Result set | Theory targets | Compiles | Active proof placeholders |
|---|---|---|---|
| Codex v2 | 23/23 | yes | 0 |
| Kimi K3 | 23/23 | yes | 0 |
The six selected experimental targets are outside the requested accuracy scope and are not included here. Each result directory is a standalone Lean project containing the theorem files and pinned build dependencies.
This repository contains release artifacts only.
Layout
codex-v2/: Codex v2 formalizations and proofs.kimi-k3/: Kimi K3 formalizations and proofs.RESULTS.md: scope and verification summary.manifest.json: source revisions and release metadata.
Build
Run the following in either result directory:
lake exe cache get
lake build
The original IPhO material remains subject to the rights of its authors and organizers. This repository does not assert a new license over the source problems.
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