Pith Number

pith:PR7HVLFY

pith:2012:PR7HVLFYUASUHQW7MKUX2XRZWG

not attested not anchored not stored refs pending

The Rank of Tree-Automatic Linear Orderings

Martin Huschenbett

arxiv:1204.3048 v1 · 2012-04-13 · cs.LO · math.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{PR7HVLFYUASUHQW7MKUX2XRZWG}

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	2026-05-18T03:57:54.081045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c7e7aacb8a02543c2df62a97d5e39b1a12007407e65689ae6f489fc6121a3bb

Aliases

arxiv: 1204.3048 · arxiv_version: 1204.3048v1 · doi: 10.48550/arxiv.1204.3048 · pith_short_12: PR7HVLFYUASU · pith_short_16: PR7HVLFYUASUHQW7 · pith_short_8: PR7HVLFY

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/PR7HVLFYUASUHQW7MKUX2XRZWG \
  | 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: 7c7e7aacb8a02543c2df62a97d5e39b1a12007407e65689ae6f489fc6121a3bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c9eeacd8241aa7defa619f1fc4091dd315f40354a1ed0b80128a87b21707c5b",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-04-13T16:48:30Z",
    "title_canon_sha256": "e2d4d63aced860ae280814fdff09e3f73286058a03dd048682aa4e326d6eb93c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3048",
    "kind": "arxiv",
    "version": 1
  }
}