Pith Number

pith:IFUX34YF

pith:2008:IFUX34YFKGABIG75DJZEYWH57L

not attested not anchored not stored refs pending

Semi-continuous Sized Types and Termination

Andreas Abel

arxiv:0804.0876 v2 · 2008-04-05 · cs.PL · 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{IFUX34YFKGABIG75DJZEYWH57L}

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	2026-05-18T01:37:42.499691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41697df3055180141bfd1a724c58fdfacefdaa55a4d15db841bb07f1c6032292

Aliases

arxiv: 0804.0876 · arxiv_version: 0804.0876v2 · doi: 10.48550/arxiv.0804.0876 · pith_short_12: IFUX34YFKGAB · pith_short_16: IFUX34YFKGABIG75 · pith_short_8: IFUX34YF

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/IFUX34YFKGABIG75DJZEYWH57L \
  | 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: 41697df3055180141bfd1a724c58fdfacefdaa55a4d15db841bb07f1c6032292

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a1731d06724fc710a1bda419b2f8b36975a953e087313f7007aecba8bb18798",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2008-04-05T22:27:29Z",
    "title_canon_sha256": "b81bda636673c4fe09b229369b1d7d2eb77cb5f06d72882ab685205225b148c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.0876",
    "kind": "arxiv",
    "version": 2
  }
}