Pith Number

pith:CUJLLAGD

pith:2014:CUJLLAGDO7ZIDIUNFCNLNW7VDJ

not attested not anchored not stored refs pending

Topological dynamics of automorphism group of countably categorical structures

Aleksander Ivanov

arxiv:1412.6657 v1 · 2014-12-20 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CUJLLAGDO7ZIDIUNFCNLNW7VDJ}

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	2026-05-18T02:30:46.501669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1512b580c377f281a28d289ab6dbf51a5496c910043d2ebdb4032076cbc57c59

Aliases

arxiv: 1412.6657 · arxiv_version: 1412.6657v1 · doi: 10.48550/arxiv.1412.6657 · pith_short_12: CUJLLAGDO7ZI · pith_short_16: CUJLLAGDO7ZIDIUN · pith_short_8: CUJLLAGD

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/CUJLLAGDO7ZIDIUNFCNLNW7VDJ \
  | 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: 1512b580c377f281a28d289ab6dbf51a5496c910043d2ebdb4032076cbc57c59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72c4c8dab027dcc6add344dbbc8d8787eb8612dfd6982e4df6311b5c61e62729",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-12-20T15:00:41Z",
    "title_canon_sha256": "dd7e0355a0553298e27d44bd586bdc80dc162e22ce5a26b7a257350889e5c2f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6657",
    "kind": "arxiv",
    "version": 1
  }
}