Pith Number

pith:DT33UBOG

pith:2010:DT33UBOGUCLSNAHNOMFMHEIHW6

not attested not anchored not stored refs pending

The Shi arrangement and the Ish arrangement

Brendon Rhoades, Drew Armstrong

arxiv:1009.1655 v2 · 2010-09-08 · 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{DT33UBOGUCLSNAHNOMFMHEIHW6}

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	2026-05-18T04:41:05.744099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cf7ba05c6a0972680ed730ac39107b79836df47d341ea431ecac8f0c221bc25

Aliases

arxiv: 1009.1655 · arxiv_version: 1009.1655v2 · doi: 10.48550/arxiv.1009.1655 · pith_short_12: DT33UBOGUCLS · pith_short_16: DT33UBOGUCLSNAHN · pith_short_8: DT33UBOG

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/DT33UBOGUCLSNAHNOMFMHEIHW6 \
  | 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: 1cf7ba05c6a0972680ed730ac39107b79836df47d341ea431ecac8f0c221bc25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "282abaef823c54f960e1c06c705841b3858c6d3a74bc02b0c21f7b5067da107e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-09-08T21:42:31Z",
    "title_canon_sha256": "be36e82d5b0233327d42d0afff4bfbd147938e6b9841a0f76823c697ed4cde1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1655",
    "kind": "arxiv",
    "version": 2
  }
}