Pith Number

pith:QUV4TI3I

pith:2019:QUV4TI3II4NZAVB3X2D6HFAK5V

not attested not anchored not stored refs pending

On free completely iterative algebras

Jiri Adamek

arxiv:1906.11166 v2 · 2019-06-26 · cs.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{QUV4TI3II4NZAVB3X2D6HFAK5V}

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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

1 paper in Pith

On free completely iterative algebras

Receipt and verification

First computed	2026-05-17T23:42:07.666049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

852bc9a368471b90543bbe87e3940aed438e72fdfe2c9c190df3335be36fa65b

Aliases

arxiv: 1906.11166 · arxiv_version: 1906.11166v2 · doi: 10.48550/arxiv.1906.11166 · pith_short_12: QUV4TI3II4NZ · pith_short_16: QUV4TI3II4NZAVB3 · pith_short_8: QUV4TI3I

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/QUV4TI3II4NZAVB3X2D6HFAK5V \
  | 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: 852bc9a368471b90543bbe87e3940aed438e72fdfe2c9c190df3335be36fa65b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b20988fb679370529727f6d393fe95a77a9b6092e42525928aea0891b6463b89",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-06-26T15:32:44Z",
    "title_canon_sha256": "1430b21db31dc42a051adebfc9e3bcc15f039993672351657a5e53890fd3ea90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.11166",
    "kind": "arxiv",
    "version": 2
  }
}