Pith Number

pith:AIA4JGRD

pith:2014:AIA4JGRDC75UU4MSIQKAZUE5EY

not attested not anchored not stored refs pending

Internalization of extensional equality

Andrew Polonsky

arxiv:1401.1148 v3 · 2014-01-06 · 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{AIA4JGRDC75UU4MSIQKAZUE5EY}

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	2026-05-18T02:26:45.574066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0201c49a2317fb4a719244140cd09d2639be7b03e378c834018bc73bedba8bc2

Aliases

arxiv: 1401.1148 · arxiv_version: 1401.1148v3 · doi: 10.48550/arxiv.1401.1148 · pith_short_12: AIA4JGRDC75U · pith_short_16: AIA4JGRDC75UU4MS · pith_short_8: AIA4JGRD

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/AIA4JGRDC75UU4MSIQKAZUE5EY \
  | 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: 0201c49a2317fb4a719244140cd09d2639be7b03e378c834018bc73bedba8bc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64fc298d7d05be296ee064e13b706db2efc9a8d4202d89bbf6b744a749338f74",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-01-06T17:27:47Z",
    "title_canon_sha256": "83ea9ef72a7e1ec81a5ba6bde882a27cde74a964e410d487e65bad6420d6f75d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1148",
    "kind": "arxiv",
    "version": 3
  }
}