Pith Number

pith:HP634BF3

pith:2015:HP634BF3JN2CCX7JX7THYIFCCO

not attested not anchored not stored refs pending

Cech Cohomology of Semiring Schemes

Jaiung Jun

arxiv:1503.01389 v3 · 2015-03-04 · math.AG · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HP634BF3JN2CCX7JX7THYIFCCO}

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	2026-05-18T01:42:47.670978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bfdbe04bb4b74215fe9bfe67c20a213989cfee20f6ea1c81f1718a3e1f257ea

Aliases

arxiv: 1503.01389 · arxiv_version: 1503.01389v3 · doi: 10.48550/arxiv.1503.01389 · pith_short_12: HP634BF3JN2C · pith_short_16: HP634BF3JN2CCX7J · pith_short_8: HP634BF3

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/HP634BF3JN2CCX7JX7THYIFCCO \
  | 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: 3bfdbe04bb4b74215fe9bfe67c20a213989cfee20f6ea1c81f1718a3e1f257ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5c8bb4bdd10ee3d0aaf9c107381376e83a391619c2cdbc8f0e83f61f08686c5",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-03-04T17:09:10Z",
    "title_canon_sha256": "77a2ce745e9a37d771532dcc79eb3f57dc10ecb156aebeed86853c1e0290192e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01389",
    "kind": "arxiv",
    "version": 3
  }
}