Pith Number

pith:SWR6OME3

pith:2018:SWR6OME3OHY3C6X7NF3R2KT2Q5

not attested not anchored not stored refs pending

PTL-separability and closures for WQOs on words

Georg Zetzsche

arxiv:1802.07397 v1 · 2018-02-21 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SWR6OME3OHY3C6X7NF3R2KT2Q5}

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	2026-05-18T00:22:50.336492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95a3e7309b71f1b17aff69771d2a7a8772b4f8f7eb8e7e0bb2cdff35576cec56

Aliases

arxiv: 1802.07397 · arxiv_version: 1802.07397v1 · doi: 10.48550/arxiv.1802.07397 · pith_short_12: SWR6OME3OHY3 · pith_short_16: SWR6OME3OHY3C6X7 · pith_short_8: SWR6OME3

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/SWR6OME3OHY3C6X7NF3R2KT2Q5 \
  | 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: 95a3e7309b71f1b17aff69771d2a7a8772b4f8f7eb8e7e0bb2cdff35576cec56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3891bcd3f03025a7d17af93cf2bba2ac28b2d5e2319b997ced16c60bffb54b9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-02-21T01:47:25Z",
    "title_canon_sha256": "b9bee462590c72c8b92f9d498bf1a217071ccc8ba37fe46ed759f9646a3c783f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07397",
    "kind": "arxiv",
    "version": 1
  }
}