Pith Number

pith:K33LT4TY

pith:2017:K33LT4TYIQT2QFCTL2VHA4D5LJ

not attested not anchored not stored refs pending

Homological behavior of idempotent subalgebras and Ext algebras

Charles Paquette, Colin Ingalls

arxiv:1703.08725 v2 · 2017-03-25 · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K33LT4TYIQT2QFCTL2VHA4D5LJ}

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	2026-05-18T00:33:02.124013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56f6b9f2784427a814535eaa70707d5a4b1a73c116b32172dbe06d54506f9052

Aliases

arxiv: 1703.08725 · arxiv_version: 1703.08725v2 · doi: 10.48550/arxiv.1703.08725 · pith_short_12: K33LT4TYIQT2 · pith_short_16: K33LT4TYIQT2QFCT · pith_short_8: K33LT4TY

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/K33LT4TYIQT2QFCTL2VHA4D5LJ \
  | 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: 56f6b9f2784427a814535eaa70707d5a4b1a73c116b32172dbe06d54506f9052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a07497837bc73e4997f6f32427947950b043489825fcdfebc182d4b6ce28e14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2017-03-25T18:13:53Z",
    "title_canon_sha256": "e1e300a8d97374972577ed80feba9e69a87fc35d0c6517eead850d8e27e42dbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08725",
    "kind": "arxiv",
    "version": 2
  }
}