Pith Number

pith:FEBUALV6

pith:2012:FEBUALV6J2ICUEETV7FQOSEMCB

not attested not anchored not stored refs pending

Fake Wedges

John R. Klein, John W. Peter

arxiv:1208.2290 v2 · 2012-08-10 · math.AT · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FEBUALV6J2ICUEETV7FQOSEMCB}

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	2026-05-18T03:42:22.263469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2903402ebe4e902a1093afcb07488c10573e2d4425aef5f6b1ed68ff57209138

Aliases

arxiv: 1208.2290 · arxiv_version: 1208.2290v2 · doi: 10.48550/arxiv.1208.2290 · pith_short_12: FEBUALV6J2IC · pith_short_16: FEBUALV6J2ICUEET · pith_short_8: FEBUALV6

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/FEBUALV6J2ICUEETV7FQOSEMCB \
  | 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: 2903402ebe4e902a1093afcb07488c10573e2d4425aef5f6b1ed68ff57209138

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa3b3ffd4fc32f500abe4e5ef30af087e2e8940e86f1d71c2d1a741137bf6c12",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-08-10T21:15:47Z",
    "title_canon_sha256": "94d7cbe5ab34996f1c6a7982512b3710edd62987769eca8031c50092308263cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2290",
    "kind": "arxiv",
    "version": 2
  }
}