Pith Number

pith:SQCQLODT

pith:2004:SQCQLODT3SWX7NKLBN4VOTMDKA

not attested not anchored not stored refs pending

Proof of Caldararu's conjecture. An appendix to a paper by Yoshioka

Daniel Huybrechts, Paolo Stellari

arxiv:math/0411541 v2 · 2004-11-24 · 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{SQCQLODT3SWX7NKLBN4VOTMDKA}

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.

Receipt and verification

First computed	2026-05-18T03:13:34.494508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

940505b873dcad7fb54b0b79574d83501f754e27c941a2b3c1d2b7b3cf625194

Aliases

arxiv: math/0411541 · arxiv_version: math/0411541v2 · doi: 10.48550/arxiv.math/0411541 · pith_short_12: SQCQLODT3SWX · pith_short_16: SQCQLODT3SWX7NKL · pith_short_8: SQCQLODT

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/SQCQLODT3SWX7NKLBN4VOTMDKA \
  | 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: 940505b873dcad7fb54b0b79574d83501f754e27c941a2b3c1d2b7b3cf625194

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eade0a6367e683a61a30d0db41c79d9869e92f1ad917e20435e1ce6502eaab7d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2004-11-24T09:53:26Z",
    "title_canon_sha256": "61f7b8078381241c630cdaf204d450c4befad76f6d4ad7b9a67f79e25092620b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0411541",
    "kind": "arxiv",
    "version": 2
  }
}