Pith Number

pith:ENDP4KGN

pith:2014:ENDP4KGNUQU47KFOJGVXKMPUWM

not attested not anchored not stored refs pending

Perfect complexes on algebraic stacks

David Rydh, Jack Hall

arxiv:1405.1887 v3 · 2014-05-08 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ENDP4KGNUQU47KFOJGVXKMPUWM}

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	2026-05-17T23:53:34.890690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2346fe28cda429cfa8ae49ab7531f4b31871fc125c5ba283f781541a320527eb

Aliases

arxiv: 1405.1887 · arxiv_version: 1405.1887v3 · doi: 10.48550/arxiv.1405.1887 · pith_short_12: ENDP4KGNUQU4 · pith_short_16: ENDP4KGNUQU47KFO · pith_short_8: ENDP4KGN

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/ENDP4KGNUQU47KFOJGVXKMPUWM \
  | 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: 2346fe28cda429cfa8ae49ab7531f4b31871fc125c5ba283f781541a320527eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5885ae5f07f24118576f48703eae3aa13b4e36f2566eef055337aab997b02d9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-08T11:35:27Z",
    "title_canon_sha256": "1abdaad5770158584f5c74967a6b8e672eb0f129ed2f5b8572b6b7a842235b81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1887",
    "kind": "arxiv",
    "version": 3
  }
}