Pith Number

pith:RGN77M3G

pith:2021:RGN77M3GXIYEQK67RCQSI7CWDW

not attested not anchored not stored refs pending

Derived, coderived, and contraderived categories of locally presentable abelian categories

Jan Stovicek, Leonid Positselski

arxiv:2101.10797 v3 · 2021-01-26 · math.CT · math.AG · 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{RGN77M3GXIYEQK67RCQSI7CWDW}

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.

Cited by

1 paper in Pith

Coderived and contraderived categories for a cotorsion pair, flat-type cotorsion pairs, and relative periodicity

Receipt and verification

First computed	2026-07-05T03:13:01.874171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

899bffb366ba30482bdf88a1247c561da5d01deb0c2ec7726855de084c91517f

Aliases

arxiv: 2101.10797 · arxiv_version: 2101.10797v3 · doi: 10.48550/arxiv.2101.10797 · pith_short_12: RGN77M3GXIYE · pith_short_16: RGN77M3GXIYEQK67 · pith_short_8: RGN77M3G

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/RGN77M3GXIYEQK67RCQSI7CWDW \
  | 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: 899bffb366ba30482bdf88a1247c561da5d01deb0c2ec7726855de084c91517f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeeafb6ef7b393ea5d58929ac28ff6ff623ea2bbf3f6a7e4ad48da9df3fe41a9",
    "cross_cats_sorted": [
      "math.AG",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2021-01-26T14:14:09Z",
    "title_canon_sha256": "b0a1a26f6c28bc5f418d9b111f41603070d9f2cc9c279409a8e7a76518f1f8c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.10797",
    "kind": "arxiv",
    "version": 3
  }
}