Pith Number

pith:NIYPLOPD

pith:1995:NIYPLOPDQ6Q7JJ2NANQDG3QZNF

not attested not anchored not stored refs pending

Strict Genericity

Sy D. Friedman

arxiv:math/9509207 v1 · 1995-09-01 · math.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{NIYPLOPDQ6Q7JJ2NANQDG3QZNF}

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	2026-05-18T01:05:48.375455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a30f5b9e387a1f4a74d0360336e196969ddb486a09489a15b02fa7324df2103

Aliases

arxiv: math/9509207 · arxiv_version: math/9509207v1 · doi: 10.48550/arxiv.math/9509207 · pith_short_12: NIYPLOPDQ6Q7 · pith_short_16: NIYPLOPDQ6Q7JJ2N · pith_short_8: NIYPLOPD

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/NIYPLOPDQ6Q7JJ2NANQDG3QZNF \
  | 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: 6a30f5b9e387a1f4a74d0360336e196969ddb486a09489a15b02fa7324df2103

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cbe50be00834124f5517703b03e46daf3bce0e7aa5049f93b205b4a77f21294",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "1995-09-01T00:00:00Z",
    "title_canon_sha256": "c09a36ce4d1a08fb26649eb9f7bc838b314cb3ac4efb5be86b95c3c95a17d206"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9509207",
    "kind": "arxiv",
    "version": 1
  }
}