Pith Number

pith:FRBVHOVA

pith:2009:FRBVHOVASER6HI7KITY6DK6BBY

not attested not anchored not stored refs pending

The infinitesimal projective rigidity under Dehn filling

Joan Porti, Michael Heusener

arxiv:0908.2863 v3 · 2009-08-20 · math.GT · 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{FRBVHOVASER6HI7KITY6DK6BBY}

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	2026-05-18T01:22:30.991355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c4353baa09123e3a3ea44f1e1abc10e035f222f75771b47912179151a436f76

Aliases

arxiv: 0908.2863 · arxiv_version: 0908.2863v3 · doi: 10.48550/arxiv.0908.2863 · pith_short_12: FRBVHOVASER6 · pith_short_16: FRBVHOVASER6HI7K · pith_short_8: FRBVHOVA

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/FRBVHOVASER6HI7KITY6DK6BBY \
  | 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: 2c4353baa09123e3a3ea44f1e1abc10e035f222f75771b47912179151a436f76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ff2ee070ebc35d5910d1999a5360eb3d3fedaa350560d672185feb89e2070d5",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2009-08-20T07:08:17Z",
    "title_canon_sha256": "6b445b494029c84551b09d5c6c6dad4dc4f17c28c486e01a7221ebe0e7b91d21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2863",
    "kind": "arxiv",
    "version": 3
  }
}