Pith Number

pith:OGLW4OO7

pith:2009:OGLW4OO7QV6GXX6Z22CJVV2UUQ

not attested not anchored not stored refs pending

Subshifts as Models for MSO Logic

Emmanuel Jeandel (LIF), Guillaume Theyssier (LAMA)

arxiv:0912.1272 v2 · 2009-12-07 · cs.DM · 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{OGLW4OO7QV6GXX6Z22CJVV2UUQ}

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	2026-05-18T03:31:45.336469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71976e39df857c6bdfd9d6849ad754a401b1b7add9ead13d2741632f917eb651

Aliases

arxiv: 0912.1272 · arxiv_version: 0912.1272v2 · doi: 10.48550/arxiv.0912.1272 · pith_short_12: OGLW4OO7QV6G · pith_short_16: OGLW4OO7QV6GXX6Z · pith_short_8: OGLW4OO7

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/OGLW4OO7QV6GXX6Z22CJVV2UUQ \
  | 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: 71976e39df857c6bdfd9d6849ad754a401b1b7add9ead13d2741632f917eb651

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd8839197817374c543aa622f5a73c048a6326e7fa64d1e16c08806ad9ed26da",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2009-12-07T15:33:39Z",
    "title_canon_sha256": "2d97dbf702900124450c8f4187ef128e7fe1493cd507d5c17a5edd2dd15258ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1272",
    "kind": "arxiv",
    "version": 2
  }
}