Pith Number

pith:NWFUG5OW

pith:2014:NWFUG5OWJKGGF6XBV6CHEDEDR6

not attested not anchored not stored refs pending

Rees algebras of modules and coherent functors

Gustav S{\ae}d\'en St{\aa}hl

arxiv:1409.6464 v2 · 2014-09-23 · math.AC · 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{NWFUG5OWJKGGF6XBV6CHEDEDR6}

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	2026-05-18T01:00:20.322035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d8b4375d64a8c62fae1af84720c838fa201efd3ffc3f4bb2b24c4b3f557ab04

Aliases

arxiv: 1409.6464 · arxiv_version: 1409.6464v2 · doi: 10.48550/arxiv.1409.6464 · pith_short_12: NWFUG5OWJKGG · pith_short_16: NWFUG5OWJKGGF6XB · pith_short_8: NWFUG5OW

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/NWFUG5OWJKGGF6XBV6CHEDEDR6 \
  | 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: 6d8b4375d64a8c62fae1af84720c838fa201efd3ffc3f4bb2b24c4b3f557ab04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e83ef23f9e43daad70531ebf0560c3fb7e361b7908a876d261bbcc77a1a92c1c",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2014-09-23T09:55:07Z",
    "title_canon_sha256": "1dd0bb524222030545f07c0c79452098929ffc2fbda69c750b4e03ee2f0a1c49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.6464",
    "kind": "arxiv",
    "version": 2
  }
}