Pith Number

pith:BOXE4ZVA

pith:2009:BOXE4ZVAQ5DJAB6BNB3G72QGU2

not attested not anchored not stored refs pending

A Theory of Explicit Substitutions with Safe and Full Composition

Delia Kesner

arxiv:0905.2539 v3 · 2009-05-15 · 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{BOXE4ZVAQ5DJAB6BNB3G72QGU2}

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	2026-05-18T01:37:40.411937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bae4e66a087469007c168766fea06a6b5297ad0d9941ee4c757ddf6fe3b51ff

Aliases

arxiv: 0905.2539 · arxiv_version: 0905.2539v3 · doi: 10.48550/arxiv.0905.2539 · pith_short_12: BOXE4ZVAQ5DJ · pith_short_16: BOXE4ZVAQ5DJAB6B · pith_short_8: BOXE4ZVA

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/BOXE4ZVAQ5DJAB6BNB3G72QGU2 \
  | 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: 0bae4e66a087469007c168766fea06a6b5297ad0d9941ee4c757ddf6fe3b51ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aeb88d3319f8f77ee7d40de562ded8ade1736bafffdc6ccfcc1d8bac1e42e35c",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2009-05-15T13:35:58Z",
    "title_canon_sha256": "0088a09bf0e4cfc810dccb7aa7b253e1c39e8dbb98168dc186e2f73b39e5e8fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2539",
    "kind": "arxiv",
    "version": 3
  }
}