Pith Number

pith:IZMN7QSW

pith:2015:IZMN7QSWUN3YVQ4SOHJBOBKDZK

not attested not anchored not stored refs pending

Refinement Type Inference via Horn Constraint Optimization

Hiroshi Unno, Kodai Hashimoto

arxiv:1505.02878 v2 · 2015-05-12 · 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{IZMN7QSWUN3YVQ4SOHJBOBKDZK}

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	2026-05-18T02:07:26.149603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4658dfc256a3778ac39271d2170543ca97f3b547e76a2ebb41ead61f82483808

Aliases

arxiv: 1505.02878 · arxiv_version: 1505.02878v2 · doi: 10.48550/arxiv.1505.02878 · pith_short_12: IZMN7QSWUN3Y · pith_short_16: IZMN7QSWUN3YVQ4S · pith_short_8: IZMN7QSW

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/IZMN7QSWUN3YVQ4SOHJBOBKDZK \
  | 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: 4658dfc256a3778ac39271d2170543ca97f3b547e76a2ebb41ead61f82483808

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9250c9c5bf110e17ddfaca74682ded340b5e3fd949883b4c1807223d681d4ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2015-05-12T05:38:53Z",
    "title_canon_sha256": "9e74d5a2c155460b5653254bdcf686d7a4b2edfe9f274d38c7390c5bbd6b4336"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02878",
    "kind": "arxiv",
    "version": 2
  }
}