Pith Number

pith:4PEIJSCU

pith:2002:4PEIJSCUUQC6A75TMGG4PCQI6C

not attested not anchored not stored refs pending

Some Algorithmic Problems in Polytope Theory

Marc E. Pfetsch, Volker Kaibel

arxiv:math/0202204 v1 · 2002-02-20 · 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{4PEIJSCUUQC6A75TMGG4PCQI6C}

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	2026-07-04T14:35:55.912940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3c884c854a405e07fb3618dc78a08f0a6772c888f4fa193f214d602daf8c235

Aliases

arxiv: math/0202204 · arxiv_version: math/0202204v1 · doi: 10.48550/arxiv.math/0202204 · pith_short_12: 4PEIJSCUUQC6 · pith_short_16: 4PEIJSCUUQC6A75T · pith_short_8: 4PEIJSCU

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/4PEIJSCUUQC6A75TMGG4PCQI6C \
  | 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: e3c884c854a405e07fb3618dc78a08f0a6772c888f4fa193f214d602daf8c235

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6971f1500b82d0a995eb6dc40cbda084972f4d9d77a606db1bbbd892341b099",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2002-02-20T13:27:04Z",
    "title_canon_sha256": "6e0f52467ab8fa14ebe0ec06f05ce71bfdc74dc74aafb0e1f793c13b69bf22d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0202204",
    "kind": "arxiv",
    "version": 1
  }
}