Pith Number

pith:NGU2GD3C

pith:2014:NGU2GD3C43YFCD464OEI5PZ4FU

not attested not anchored not stored refs pending

Universal spaces for unramified Galois cohomology

Fedor Bogomolov, Yuri Tschinkel

arxiv:1408.0392 v1 · 2014-08-02 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NGU2GD3C43YFCD464OEI5PZ4FU}

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	2026-05-18T02:45:57.197302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69a9a30f62e6f0510f9ee3888ebf3c2d01ed1656553bba6914c3e3497c186b00

Aliases

arxiv: 1408.0392 · arxiv_version: 1408.0392v1 · doi: 10.48550/arxiv.1408.0392 · pith_short_12: NGU2GD3C43YF · pith_short_16: NGU2GD3C43YFCD46 · pith_short_8: NGU2GD3C

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/NGU2GD3C43YFCD464OEI5PZ4FU \
  | 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: 69a9a30f62e6f0510f9ee3888ebf3c2d01ed1656553bba6914c3e3497c186b00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15b11d55e92a38b7d854f2f97d6a2aeb6c9b9c636f73c7d4604aa16f55d3a1e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-08-02T16:15:19Z",
    "title_canon_sha256": "4747f29da7e913137e84682ed41e56f3e0972725b4b239db63709bb16f31f9a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0392",
    "kind": "arxiv",
    "version": 1
  }
}