Pith Number

pith:O7YJQP3D

pith:2009:O7YJQP3DP4QJ44ISIBBNFABXDR

not attested not anchored not stored refs pending

Profiles of inflated surfaces

Igor Pak, Jean-Marc Schlenker

arxiv:0907.5057 v1 · 2009-07-29 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O7YJQP3DP4QJ44ISIBBNFABXDR}

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	2026-05-18T02:12:46.778220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77f0983f637f209e71124042d280371c700fee63e1fc6f26d64d9d336ba49343

Aliases

arxiv: 0907.5057 · arxiv_version: 0907.5057v1 · doi: 10.48550/arxiv.0907.5057 · pith_short_12: O7YJQP3DP4QJ · pith_short_16: O7YJQP3DP4QJ44IS · pith_short_8: O7YJQP3D

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/O7YJQP3DP4QJ44ISIBBNFABXDR \
  | 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: 77f0983f637f209e71124042d280371c700fee63e1fc6f26d64d9d336ba49343

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4f3257a12c34d1d5b27ce255c734390f3dbbcd43b92cd2cbbafc44566596074",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-07-29T07:22:40Z",
    "title_canon_sha256": "45c83bac601056a476bb322d41b2924ee34718d4363d3da6a6aacc5eec1b4c6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.5057",
    "kind": "arxiv",
    "version": 1
  }
}