Pith Number

pith:U5XBE6ZQ

pith:2018:U5XBE6ZQ5BNMAGZPSU7T2PWTRP

not attested not anchored not stored refs pending

Schematic Polymorphism in the Abella Proof Assistant

Gopalan Nadathur, Yuting Wang

arxiv:1806.07523 v1 · 2018-06-20 · cs.LO · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5XBE6ZQ5BNMAGZPSU7T2PWTRP}

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	2026-05-18T00:12:47.533412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a76e127b30e85ac01b2f953f3d3ed38bcaa85f14a4679c5f4cc1405893172b8a

Aliases

arxiv: 1806.07523 · arxiv_version: 1806.07523v1 · doi: 10.48550/arxiv.1806.07523 · pith_short_12: U5XBE6ZQ5BNM · pith_short_16: U5XBE6ZQ5BNMAGZP · pith_short_8: U5XBE6ZQ

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/U5XBE6ZQ5BNMAGZPSU7T2PWTRP \
  | 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: a76e127b30e85ac01b2f953f3d3ed38bcaa85f14a4679c5f4cc1405893172b8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "550d593d89adb7a3fd7003ebab740041c1b333b46ff215ca13cdecbb625b2125",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-06-20T02:04:41Z",
    "title_canon_sha256": "119493fe5b08888da147c925b3a1a6a842d3147f4b182d9192b4d1d8ac87d243"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07523",
    "kind": "arxiv",
    "version": 1
  }
}