Pith Number

pith:WMQQT2VC

pith:2025:WMQQT2VCYGAAS42VHC6EPK3AAB

not attested not anchored not stored refs pending

Mirror symmetry for certain blowups of Grassmannians

Changzheng Li, Huazhong Ke, Jianxun Hu, Lei Song

arxiv:2502.13545 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{WMQQT2VCYGAAS42VHC6EPK3AAB}

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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

Truncated Grassmannians, blow-ups along Schubert varieties and collineations

Receipt and verification

First computed	2026-07-05T10:16:48.977393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b32109eaa2c18009735538bc47ab60004ef51a7b7dffb448567f6542367f0476

Aliases

arxiv: 2502.13545 · arxiv_version: 2502.13545v1 · doi: 10.48550/arxiv.2502.13545 · pith_short_12: WMQQT2VCYGAA · pith_short_16: WMQQT2VCYGAAS42V · pith_short_8: WMQQT2VC

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/WMQQT2VCYGAAS42VHC6EPK3AAB \
  | 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: b32109eaa2c18009735538bc47ab60004ef51a7b7dffb448567f6542367f0476

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d99e74aeb73cdf08dcdb810c051c3cc78e3a448be429bdacbad76aa5b21c955",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-02-19T08:54:37Z",
    "title_canon_sha256": "15f41f6140f9672164360988a94328b01d1f1423f44ce4b2c52b378adc9cf264"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13545",
    "kind": "arxiv",
    "version": 1
  }
}