Pith Number

pith:ICUNS7KY

pith:2018:ICUNS7KYDREY2YMUSPPE4YIQME

not attested not anchored not stored refs pending

Regularity and $h$-polynomials of edge ideals

Adam Van Tuyl, Kazunori Matsuda, Takayuki Hibi

arxiv:1810.07140 v1 · 2018-10-16 · math.AC · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ICUNS7KYDREY2YMUSPPE4YIQME}

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	2026-05-18T00:03:10.311274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40a8d97d581c498d619493de4e6110611de180846a7c496d3e01f490082479b5

Aliases

arxiv: 1810.07140 · arxiv_version: 1810.07140v1 · doi: 10.48550/arxiv.1810.07140 · pith_short_12: ICUNS7KYDREY · pith_short_16: ICUNS7KYDREY2YMU · pith_short_8: ICUNS7KY

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/ICUNS7KYDREY2YMUSPPE4YIQME \
  | 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: 40a8d97d581c498d619493de4e6110611de180846a7c496d3e01f490082479b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "998ee870789b350a1831418c8664cd27478445e0ca347ce4de5cb37252edad30",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2018-10-16T17:13:14Z",
    "title_canon_sha256": "e1af4c3e35a3b2835801ea505707906c1dd17994e4de9b4aecfc1df1b4489b08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.07140",
    "kind": "arxiv",
    "version": 1
  }
}