Pith Number

pith:CIUYMVJM

pith:2009:CIUYMVJMEBGZQX6SSQ77A6DU4R

not attested not anchored not stored refs pending

Half-flat nilmanifolds

Diego Conti

arxiv:0903.1175 v3 · 2009-03-06 · 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{CIUYMVJMEBGZQX6SSQ77A6DU4R}

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	2026-05-18T04:25:26.190162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

122986552c204d985fd2943ff07874e46dfcb2bc53fce9e9cce94a1a3a9b67a2

Aliases

arxiv: 0903.1175 · arxiv_version: 0903.1175v3 · doi: 10.48550/arxiv.0903.1175 · pith_short_12: CIUYMVJMEBGZ · pith_short_16: CIUYMVJMEBGZQX6S · pith_short_8: CIUYMVJM

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/CIUYMVJMEBGZQX6SSQ77A6DU4R \
  | 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: 122986552c204d985fd2943ff07874e46dfcb2bc53fce9e9cce94a1a3a9b67a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b64b06afd2ff780fd5dbf4bb8045bb9f63a4bc8536c1f48ce4aa411654bf9722",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-03-06T16:16:08Z",
    "title_canon_sha256": "396dd73b64d1799f92f60a44630748997409e9c526dedd9fbb6607f1336b6cef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1175",
    "kind": "arxiv",
    "version": 3
  }
}