Pith Number

pith:M73MTYIU

pith:2007:M73MTYIUFTYFKTUSORHH75UR7A

not attested not anchored not stored refs pending

Stein or Milnor fillability and cohomology

Patrick Popescu-Pampu

arxiv:0711.1149 v2 · 2007-11-07 · math.CV · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M73MTYIUFTYFKTUSORHH75UR7A}

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	2026-05-18T04:09:04.703720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67f6c9e1142cf0554e92744e7ff691f81892af33af6ecd0614848b0f98d0fbd6

Aliases

arxiv: 0711.1149 · arxiv_version: 0711.1149v2 · doi: 10.48550/arxiv.0711.1149 · pith_short_12: M73MTYIUFTYF · pith_short_16: M73MTYIUFTYFKTUS · pith_short_8: M73MTYIU

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/M73MTYIUFTYFKTUSORHH75UR7A \
  | 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: 67f6c9e1142cf0554e92744e7ff691f81892af33af6ecd0614848b0f98d0fbd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbd90dd6895d937b14161625a1713ccd3ea9e5791b7db7359f729fcbcbdb3017",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "",
    "primary_cat": "math.CV",
    "submitted_at": "2007-11-07T19:54:53Z",
    "title_canon_sha256": "a24fd62d3e7f5d0b9b362694067254f2c50e68ee3cb61525be891a1dfdf05e8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.1149",
    "kind": "arxiv",
    "version": 2
  }
}