Pith Number

pith:L6TDNTTL

pith:2025:L6TDNTTLMWMMLU2QZZEZX5D6EQ

not attested not anchored not stored refs pending

On the quantum cohomology of blow-ups of four-dimensional quadrics

Changzheng Li, Huazhong Ke, Jianxun Hu, Lei Song

arxiv:2502.13558 v1 · 2025-02-19 · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L6TDNTTLMWMMLU2QZZEZX5D6EQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Naive atoms of blowups: examples

Receipt and verification

First computed	2026-07-05T10:16:49.272027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fa636ce6b6598c5d350ce499bf47e243776cfe1697a7dbfb8ae3c47fd699209

Aliases

arxiv: 2502.13558 · arxiv_version: 2502.13558v1 · doi: 10.48550/arxiv.2502.13558 · pith_short_12: L6TDNTTLMWMM · pith_short_16: L6TDNTTLMWMMLU2Q · pith_short_8: L6TDNTTL

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/L6TDNTTLMWMMLU2QZZEZX5D6EQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5fa636ce6b6598c5d350ce499bf47e243776cfe1697a7dbfb8ae3c47fd699209

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42282ad8d93b739b537322bfe77c125793f6bde1fd28b5d19ae010e939a59da5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-02-19T09:10:34Z",
    "title_canon_sha256": "95b6bfb9fca90458b859c80e7bf9b22484cbaebf5f48c89daec73eecb154fd26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13558",
    "kind": "arxiv",
    "version": 1
  }
}