Pith Number

pith:2VDHZB5S

pith:2014:2VDHZB5SHUFOBFLO3HJ33WAVLR

not attested not anchored not stored refs pending

Andrews' Type Theory with Undefinedness

William M. Farmer

arxiv:1406.7492 v1 · 2014-06-29 · math.LO · 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{2VDHZB5SHUFOBFLO3HJ33WAVLR}

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	2026-05-18T02:48:45.150119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5467c87b23d0ae0956ed9d3bdd8155c41f1d34a45d0238391dc1602cd8ab941

Aliases

arxiv: 1406.7492 · arxiv_version: 1406.7492v1 · doi: 10.48550/arxiv.1406.7492 · pith_short_12: 2VDHZB5SHUFO · pith_short_16: 2VDHZB5SHUFOBFLO · pith_short_8: 2VDHZB5S

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/2VDHZB5SHUFOBFLO3HJ33WAVLR \
  | 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: d5467c87b23d0ae0956ed9d3bdd8155c41f1d34a45d0238391dc1602cd8ab941

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7dc59606820bb66d4a265ef895ee3b9100e6c9645a940297c7b22fa5ead2f9a",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-06-29T11:44:19Z",
    "title_canon_sha256": "34a27a578407e15e0c77fbe953e8e71b16edbfeffc57a725e87c33514d4088d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.7492",
    "kind": "arxiv",
    "version": 1
  }
}