Pith Number

pith:EW5IVU62

pith:2011:EW5IVU62U65ZFQ3ANADXRGXJGT

not attested not anchored not stored refs pending

Free arrangements and coefficients of characteristic polynomials

Masahiko Yoshinaga, Takuro Abe

arxiv:1109.0668 v3 · 2011-09-04 · 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{EW5IVU62U65ZFQ3ANADXRGXJGT}

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	2026-05-18T04:01:26.091446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25ba8ad3daa7bb92c3606807789ae934f6ce550c02a732aaadcaf4ed1b1fa30d

Aliases

arxiv: 1109.0668 · arxiv_version: 1109.0668v3 · doi: 10.48550/arxiv.1109.0668 · pith_short_12: EW5IVU62U65Z · pith_short_16: EW5IVU62U65ZFQ3A · pith_short_8: EW5IVU62

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/EW5IVU62U65ZFQ3ANADXRGXJGT \
  | 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: 25ba8ad3daa7bb92c3606807789ae934f6ce550c02a732aaadcaf4ed1b1fa30d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9ec53a98258df62d19ff379950fbf7095e0f497a4407d059e7523a459463f02",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-09-04T02:49:34Z",
    "title_canon_sha256": "488b2c00944b78f6460d638769457a36aed61a9c6db3973f7f188ba8f0879fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0668",
    "kind": "arxiv",
    "version": 3
  }
}