Pith Number

pith:VPYPDQA2

pith:2008:VPYPDQA2C37W7BCA25XKXOGKAR

not attested not anchored not stored refs pending

Cohomological tautness for Riemannian foliations

J.I. Royo Prieto, M. Saralegi-Aranguren, R. Wolak

arxiv:0805.4714 v1 · 2008-05-30 · 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{VPYPDQA2C37W7BCA25XKXOGKAR}

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	2026-05-18T02:15:52.136754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abf0f1c01a16ff6f8440d76eabb8ca046ca93dc63eed7baec5d4fcfa39140f7d

Aliases

arxiv: 0805.4714 · arxiv_version: 0805.4714v1 · doi: 10.48550/arxiv.0805.4714 · pith_short_12: VPYPDQA2C37W · pith_short_16: VPYPDQA2C37W7BCA · pith_short_8: VPYPDQA2

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/VPYPDQA2C37W7BCA25XKXOGKAR \
  | 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: abf0f1c01a16ff6f8440d76eabb8ca046ca93dc63eed7baec5d4fcfa39140f7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5787f2aac5042133ab94173e2fdcec410a1d10a607b297568a79fbef1c55eb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2008-05-30T10:16:58Z",
    "title_canon_sha256": "92fa6bb8b8ed45f29b05bb60f84fcd78232f2d509beb4202e9a23d9d1a88d09f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.4714",
    "kind": "arxiv",
    "version": 1
  }
}