Pith Number

pith:Z5FFZE6F

pith:2008:Z5FFZE6FXTAOUPG4TXKTBQMJHO

not attested not anchored not stored refs pending

The telescope conjecture for hereditary rings via Ext-orthogonal pairs

Henning Krause, Jan Stovicek

arxiv:0810.1401 v5 · 2008-10-08 · math.RT · 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{Z5FFZE6FXTAOUPG4TXKTBQMJHO}

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	2026-05-18T04:41:52.987889Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf4a5c93c5bcc0ea3cdc9dd530c1893bbd2d8a23bf465e2402c97fe7d63d1d48

Aliases

arxiv: 0810.1401 · arxiv_version: 0810.1401v5 · doi: 10.48550/arxiv.0810.1401 · pith_short_12: Z5FFZE6FXTAO · pith_short_16: Z5FFZE6FXTAOUPG4 · pith_short_8: Z5FFZE6F

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/Z5FFZE6FXTAOUPG4TXKTBQMJHO \
  | 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: cf4a5c93c5bcc0ea3cdc9dd530c1893bbd2d8a23bf465e2402c97fe7d63d1d48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7954f9683e74fb6d74fa3bd078918bfd05d5b9a5ee90dfd7ebd777e0f063e6a8",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2008-10-08T10:57:29Z",
    "title_canon_sha256": "4031eb331fbbf1b0ebb4aef2268a38a023b79f18339545b7c9535bc9c23af8a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.1401",
    "kind": "arxiv",
    "version": 5
  }
}