Pith Number

pith:3Y7F4TDF

pith:2008:3Y7F4TDF3LMA77SYDDA47YLG2V

not attested not anchored not stored refs pending

On the generalised Ritt problem as a computational problem

Alexey Ovchinnikov, Marina Kondratieva, Oleg Golubitsky

arxiv:0809.1128 v1 · 2008-09-06 · math.AC · 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{3Y7F4TDF3LMA77SYDDA47YLG2V}

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	2026-05-18T03:32:06.304010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de3e5e4c65dad80ffe5818c1cfe166d5534eabbbd51ea9abff6dd6d42732eba6

Aliases

arxiv: 0809.1128 · arxiv_version: 0809.1128v1 · doi: 10.48550/arxiv.0809.1128 · pith_short_12: 3Y7F4TDF3LMA · pith_short_16: 3Y7F4TDF3LMA77SY · pith_short_8: 3Y7F4TDF

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/3Y7F4TDF3LMA77SYDDA47YLG2V \
  | 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: de3e5e4c65dad80ffe5818c1cfe166d5534eabbbd51ea9abff6dd6d42732eba6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "625f21f19b75f832f5bc4f7aa033fb29fbb5ae1b95495a74ab91e79d34d6f93a",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2008-09-06T03:44:40Z",
    "title_canon_sha256": "8c6d2a1c98ff825817e80f3c703828adefd4d28b41b7d40a162573cccfe5ef33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1128",
    "kind": "arxiv",
    "version": 1
  }
}