Pith Number

pith:EAZOTQA2

pith:2015:EAZOTQA2JMZGUDBPEIFPTO5QSY

not attested not anchored not stored refs pending

Higher central extensions and cohomology

Diana Rodelo, Tim Van der Linden

arxiv:1502.05282 v1 · 2015-02-18 · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EAZOTQA2JMZGUDBPEIFPTO5QSY}

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	2026-05-18T01:26:18.642235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2032e9c01a4b326a0c2f220af9bbb0962b6162f2c61290f5530ebc4fde5e0e9d

Aliases

arxiv: 1502.05282 · arxiv_version: 1502.05282v1 · doi: 10.48550/arxiv.1502.05282 · pith_short_12: EAZOTQA2JMZG · pith_short_16: EAZOTQA2JMZGUDBP · pith_short_8: EAZOTQA2

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/EAZOTQA2JMZGUDBPEIFPTO5QSY \
  | 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: 2032e9c01a4b326a0c2f220af9bbb0962b6162f2c61290f5530ebc4fde5e0e9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b76697f56078bd18ae58eb2d1ab5fd7c47550f75fecb83dc86f9e0c07ca9aa5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2015-02-18T15:56:10Z",
    "title_canon_sha256": "c010282496d4e475813fb37a56949033af6dff614990763ad4924d90dbea1672"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05282",
    "kind": "arxiv",
    "version": 1
  }
}