Pith Number

pith:MNDQIDGU

pith:2012:MNDQIDGUXHZASTL2JBWP24CRCH

not attested not anchored not stored refs pending

DG algebras with exterior homology

J. P. C. Greenlees, S. B. Iyengar, W. G. Dwyer

arxiv:1207.3461 v1 · 2012-07-14 · math.AT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MNDQIDGUXHZASTL2JBWP24CRCH}

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	2026-05-18T02:57:53.375081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6347040cd4b9f2094d7a486cfd705111fedb25bc9ba3574e17e9c30440387534

Aliases

arxiv: 1207.3461 · arxiv_version: 1207.3461v1 · doi: 10.48550/arxiv.1207.3461 · pith_short_12: MNDQIDGUXHZA · pith_short_16: MNDQIDGUXHZASTL2 · pith_short_8: MNDQIDGU

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/MNDQIDGUXHZASTL2JBWP24CRCH \
  | 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: 6347040cd4b9f2094d7a486cfd705111fedb25bc9ba3574e17e9c30440387534

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "907f15d4be6f437bfaa84ee6c0f39818ea4c2ace1326e306651a565b605214f3",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-07-14T21:07:41Z",
    "title_canon_sha256": "802c698b6afe73ed1141bed46c783defafb68046ad738c0ba661f9620e11d803"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3461",
    "kind": "arxiv",
    "version": 1
  }
}