Pith Number

pith:VOVUR67I

pith:2019:VOVUR67I63DK4G7RY6K45PAY7O

not attested not anchored not stored refs pending

In memory of Igor Dmitrievich Ado

Dietrich Burde, Vsevolod Gubarev

arxiv:1908.08361 v1 · 2019-08-22 · math.HO · 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{VOVUR67I63DK4G7RY6K45PAY7O}

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	2026-07-04T23:59:12.037015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abab48fbe8f6c6ae1bf1c795cebc18fba8f64a230092910d8b7c86cf815c2014

Aliases

arxiv: 1908.08361 · arxiv_version: 1908.08361v1 · doi: 10.48550/arxiv.1908.08361 · pith_short_12: VOVUR67I63DK · pith_short_16: VOVUR67I63DK4G7R · pith_short_8: VOVUR67I

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/VOVUR67I63DK4G7RY6K45PAY7O \
  | 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: abab48fbe8f6c6ae1bf1c795cebc18fba8f64a230092910d8b7c86cf815c2014

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fe02a69de72587f925b51953a6009124307f4dfd2389bb4ecd2b08d002b0f4b",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2019-08-22T13:30:04Z",
    "title_canon_sha256": "f9354faa5a6157472dbee8148348873ea0e93c0e8ffc3c0370f5c1eb18f05e9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08361",
    "kind": "arxiv",
    "version": 1
  }
}