Pith Number

pith:W6OMTETV

pith:2013:W6OMTETVESKCDRWIKQ5L37DWDH

not attested not anchored not stored refs pending

Pattern Matching via Choice Existential Quantifications in Imperative Languages

Keehang Kwon

arxiv:1309.1251 v1 · 2013-09-05 · 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{W6OMTETVESKCDRWIKQ5L37DWDH}

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	2026-05-18T03:14:07.869449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b79cc99275249421c6c8543abdfc7619ce1548f908e715ce5c89229bfdbe60ae

Aliases

arxiv: 1309.1251 · arxiv_version: 1309.1251v1 · doi: 10.48550/arxiv.1309.1251 · pith_short_12: W6OMTETVESKC · pith_short_16: W6OMTETVESKCDRWI · pith_short_8: W6OMTETV

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/W6OMTETVESKCDRWIKQ5L37DWDH \
  | 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: b79cc99275249421c6c8543abdfc7619ce1548f908e715ce5c89229bfdbe60ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c94377404353b5b0ffedc76d45403ee800ddcb6ad7bea1f0e99b3b5a6d20da93",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2013-09-05T07:45:00Z",
    "title_canon_sha256": "b789e3a864ab677901116faeb79115c58fcd17e24e10de6aaa569ffd472abfc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1251",
    "kind": "arxiv",
    "version": 1
  }
}