Pith Number

pith:WADOLE6N

pith:2021:WADOLE6N2W2MZQFH4ZPL2VLHK2

not attested not anchored not stored refs pending

First-Order Sketch Conditions and Constraints -- A Category Independent Approach

Uwe Wolter

arxiv:2103.07558 v1 · 2021-03-12 · 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{WADOLE6N2W2MZQFH4ZPL2VLHK2}

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	2026-07-05T02:22:42.522785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b006e593cdd5b4ccc0a7e65ebd556756a5212028b9e2d96762dc9dc34f7f6042

Aliases

arxiv: 2103.07558 · arxiv_version: 2103.07558v1 · doi: 10.48550/arxiv.2103.07558 · pith_short_12: WADOLE6N2W2M · pith_short_16: WADOLE6N2W2MZQFH · pith_short_8: WADOLE6N

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/WADOLE6N2W2MZQFH4ZPL2VLHK2 \
  | 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: b006e593cdd5b4ccc0a7e65ebd556756a5212028b9e2d96762dc9dc34f7f6042

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6319ba086ccd044625c042aabaffc27c1a50ddbbedeaf7211cca193620cbb5e3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2021-03-12T22:44:58Z",
    "title_canon_sha256": "737a981ec9f4bd90d3342770f51e313f409c6d3fabf274a7cd8e46eead3a09e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.07558",
    "kind": "arxiv",
    "version": 1
  }
}