Pith Number

pith:HQEDY3AJ

pith:2012:HQEDY3AJWRRYKQ53YHG4VHHI6Y

not attested not anchored not stored refs pending

Homotopy category of projective complexes and complexes of Gorenstein projective modules

Javad Asadollahi, Rasool Hafezi, Shokrollah Salarian

arxiv:1202.1620 v1 · 2012-02-08 · math.AC · 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{HQEDY3AJWRRYKQ53YHG4VHHI6Y}

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	2026-05-18T04:02:51.801244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c083c6c09b4638543bbc1cdca9ce8f60dcc15bcae69e9d7ec6aaec2fb4d5ac4

Aliases

arxiv: 1202.1620 · arxiv_version: 1202.1620v1 · doi: 10.48550/arxiv.1202.1620 · pith_short_12: HQEDY3AJWRRY · pith_short_16: HQEDY3AJWRRYKQ53 · pith_short_8: HQEDY3AJ

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/HQEDY3AJWRRYKQ53YHG4VHHI6Y \
  | 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: 3c083c6c09b4638543bbc1cdca9ce8f60dcc15bcae69e9d7ec6aaec2fb4d5ac4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "224e2b4dbf57d9a129450f4d242f6ecc17cd5d2d95dd7d80cce7d38c88b89449",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2012-02-08T08:08:27Z",
    "title_canon_sha256": "8208cfb3f6ce4c422dbdf4bf00b87bba7ca598b055b3f85505fc197ac1aeb2b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1620",
    "kind": "arxiv",
    "version": 1
  }
}