Pith Number

pith:YL2GCHO3

pith:2014:YL2GCHO3XIR6HWGMDHWASLWKKM

not attested not anchored not stored refs pending

Infinitesimal Torelli Theorem for regular surfaces with very ample canonical divisor

Igor Reider

arxiv:1402.0192 v4 · 2014-02-02 · 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{YL2GCHO3XIR6HWGMDHWASLWKKM}

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	2026-05-18T00:22:07.097855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2f4611ddbba23e3d8cc19ec092eca53214e6ee2576c2f8c4bbb45eb08a2d71b

Aliases

arxiv: 1402.0192 · arxiv_version: 1402.0192v4 · doi: 10.48550/arxiv.1402.0192 · pith_short_12: YL2GCHO3XIR6 · pith_short_16: YL2GCHO3XIR6HWGM · pith_short_8: YL2GCHO3

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/YL2GCHO3XIR6HWGMDHWASLWKKM \
  | 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: c2f4611ddbba23e3d8cc19ec092eca53214e6ee2576c2f8c4bbb45eb08a2d71b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce445f61860be670ca09548d094dd503a1ff73f7265b845000de8f6e96935009",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-02-02T13:29:37Z",
    "title_canon_sha256": "fc0e29fbccff81ca9e0a60a93e9f9cd2be1b24102f3cd4e3d5459ae2bbe6e251"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0192",
    "kind": "arxiv",
    "version": 4
  }
}