Pith Number

pith:M2MB6OFI

pith:2014:M2MB6OFISJ25JQ57WBTISXAHBI

not attested not anchored not stored refs pending

A Constructive Version of Tarski's Geometry

Michael Beeson

arxiv:1407.4399 v3 · 2014-07-13 · 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{M2MB6OFISJ25JQ57WBTISXAHBI}

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	2026-05-18T01:27:36.790646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66981f38a89275d4c3bfb066895c070a21a3483d2d419c3f8ba8098f28af54dc

Aliases

arxiv: 1407.4399 · arxiv_version: 1407.4399v3 · doi: 10.48550/arxiv.1407.4399 · pith_short_12: M2MB6OFISJ25 · pith_short_16: M2MB6OFISJ25JQ57 · pith_short_8: M2MB6OFI

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/M2MB6OFISJ25JQ57WBTISXAHBI \
  | 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: 66981f38a89275d4c3bfb066895c070a21a3483d2d419c3f8ba8098f28af54dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b2814b6d0cded35971407f998642eecc1a7350fcf10e7d81984d7f38d5c2e63",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-07-13T23:54:57Z",
    "title_canon_sha256": "944f433f52aa8c3b4d79521541184068f6450a2ce4415ac1eedf8c0117ac3bfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4399",
    "kind": "arxiv",
    "version": 3
  }
}