Pith Number

pith:WWWQ7CGS

pith:2011:WWWQ7CGS4COWUI242DJ2IT2ZRJ

not attested not anchored not stored refs pending

Inscribing a regular octahedron into polytopes

Arseniy Akopyan, Roman Karasev

arxiv:1107.4428 v3 · 2011-07-22 · math.CO · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WWWQ7CGS4COWUI242DJ2IT2ZRJ}

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	2026-05-18T03:33:59.980842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5ad0f88d2e09d6a235cd0d3a44f598a40abb0d18b14b40fe4ab15d88dc37e04

Aliases

arxiv: 1107.4428 · arxiv_version: 1107.4428v3 · doi: 10.48550/arxiv.1107.4428 · pith_short_12: WWWQ7CGS4COW · pith_short_16: WWWQ7CGS4COWUI24 · pith_short_8: WWWQ7CGS

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/WWWQ7CGS4COWUI242DJ2IT2ZRJ \
  | 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: b5ad0f88d2e09d6a235cd0d3a44f598a40abb0d18b14b40fe4ab15d88dc37e04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7297494b12d0309b4e58b1719d90bf59d8a24839cc5c7ba0daad0b463a9968ca",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-07-22T06:44:29Z",
    "title_canon_sha256": "47ec78c508f849c7678412c48e702c8f1c1d2186c1203b9f9ee65224164ef1dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4428",
    "kind": "arxiv",
    "version": 3
  }
}