Pith Number

pith:7PUCQY4K

pith:2004:7PUCQY4K5IBVXVFLDTH4GNEWCA

not attested not anchored not stored refs pending

Subspace arrangements defined by products of linear forms

Anders Bj\"orner, Irena Peeva, Jessica Sidman

arxiv:math/0401373 v3 · 2004-01-27 · math.CO · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7PUCQY4K5IBVXVFLDTH4GNEWCA}

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	2026-05-18T04:03:56.096161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbe828638aea035bd4ab1ccfc33496103567755fbcfcb40d072fe75acf1d141d

Aliases

arxiv: math/0401373 · arxiv_version: math/0401373v3 · doi: 10.48550/arxiv.math/0401373 · pith_short_12: 7PUCQY4K5IBV · pith_short_16: 7PUCQY4K5IBVXVFL · pith_short_8: 7PUCQY4K

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/7PUCQY4K5IBVXVFLDTH4GNEWCA \
  | 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: fbe828638aea035bd4ab1ccfc33496103567755fbcfcb40d072fe75acf1d141d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e51859bf07ff731bfbbf95f3a2a600e1815a13e0253a3be6815c434d4eba2fac",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2004-01-27T13:21:15Z",
    "title_canon_sha256": "023101ac41234005db12a7028a9a9c08fb635053acd301dfff607ac9bd4df3d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0401373",
    "kind": "arxiv",
    "version": 3
  }
}