Pith Number

pith:BFI6BUVL

pith:2005:BFI6BUVLAP52WORXINPXGQ53F6

not attested not anchored not stored refs pending

Schwerdtfeger-Fillmore-Springer-Cnops Construction Implemented in GiNaC

Vladimir V. Kisil

arxiv:cs/0512073 v12 · 2005-12-17 · cs.MS · cs.CG · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BFI6BUVLAP52WORXINPXGQ53F6}

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	2026-05-18T01:24:37.259248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0951e0d2ab03fbab3a37435f7343bb2f80dc594dc0738f0b5fca07ce81e6ae2f

Aliases

arxiv: cs/0512073 · arxiv_version: cs/0512073v12 · doi: 10.48550/arxiv.cs/0512073 · pith_short_12: BFI6BUVLAP52 · pith_short_16: BFI6BUVLAP52WORX · pith_short_8: BFI6BUVL

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/BFI6BUVLAP52WORXINPXGQ53F6 \
  | 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: 0951e0d2ab03fbab3a37435f7343bb2f80dc594dc0738f0b5fca07ce81e6ae2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f89532b6eb2baf613f7c948b309bc33d302cb0c7a1023a33f976ee04e0138021",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.SC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2005-12-17T15:09:11Z",
    "title_canon_sha256": "85f1a299a2fa74ec8eb5c77e8af00193849c5b7c4c46dca696d6221edd6a161c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0512073",
    "kind": "arxiv",
    "version": 12
  }
}