Pith Number

pith:LDQ7MVNG

pith:2015:LDQ7MVNGAADBA5ZPK6WXTZM7L2

not attested not anchored not stored refs pending

Covers, envelopes, and cotorsion theories in locally presentable abelian categories and contramodule categories

Jiri Rosicky, Leonid Positselski

arxiv:1512.08119 v2 · 2015-12-26 · math.CT · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LDQ7MVNGAADBA5ZPK6WXTZM7L2}

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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

2 papers in Pith

Homomorphisms of topological rings and change-of-scalar functors

Contraherent cosheaves of contramodules on Noetherian formal schemes

Receipt and verification

First computed	2026-05-18T00:46:02.744027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58e1f655a6000610772f57ad79e59f5e86158846f96aa58e0cfdbef151d7c214

Aliases

arxiv: 1512.08119 · arxiv_version: 1512.08119v2 · doi: 10.48550/arxiv.1512.08119 · pith_short_12: LDQ7MVNGAADB · pith_short_16: LDQ7MVNGAADBA5ZP · pith_short_8: LDQ7MVNG

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/LDQ7MVNGAADBA5ZPK6WXTZM7L2 \
  | 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: 58e1f655a6000610772f57ad79e59f5e86158846f96aa58e0cfdbef151d7c214

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "325ecb96a1d2425a2fa730f7c563c5ce7e2093b0c6b2218569895f2dd16e2ea2",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2015-12-26T14:57:03Z",
    "title_canon_sha256": "b7a1c3b7828bb18eb3c011813d13b3fe1aed5053b12473eba3b6f881ca68563b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08119",
    "kind": "arxiv",
    "version": 2
  }
}