Pith Number

pith:B4GFNZDJ

pith:2012:B4GFNZDJXHEOFXAMAE36H4MNB2

not attested not anchored not stored refs pending

Seifert fiberings and collapsing of infrasolv spaces

Oliver Baues, Wilderich Tuschmann

arxiv:1209.2450 v1 · 2012-09-11 · 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{B4GFNZDJXHEOFXAMAE36H4MNB2}

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	2026-05-18T03:45:43.118234Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f0c56e469b9c8e2dc0c0137e3f18d0e944e6a6c0caaf5f5a43e6cd5e95d25ca

Aliases

arxiv: 1209.2450 · arxiv_version: 1209.2450v1 · doi: 10.48550/arxiv.1209.2450 · pith_short_12: B4GFNZDJXHEO · pith_short_16: B4GFNZDJXHEOFXAM · pith_short_8: B4GFNZDJ

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/B4GFNZDJXHEOFXAMAE36H4MNB2 \
  | 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: 0f0c56e469b9c8e2dc0c0137e3f18d0e944e6a6c0caaf5f5a43e6cd5e95d25ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41d74ac033099735db668a06506d44e8e5ea2f8149dcba4dfa4a34c3ae319744",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-09-11T21:58:35Z",
    "title_canon_sha256": "2a24b461edbc79a59dc70f3eaa8a079b1625e94b451d47642b36f8c90f677a88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2450",
    "kind": "arxiv",
    "version": 1
  }
}