Pith Number

pith:SWDTHAPZ

pith:2012:SWDTHAPZAZAY5E7UCZDKK4UNK4

not attested not anchored not stored refs pending

A note on coloring line arrangements

Eyal Ackerman, Rom Pinchasi

arxiv:1207.0080 v1 · 2012-06-30 · cs.CG · 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{SWDTHAPZAZAY5E7UCZDKK4UNK4}

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	2026-05-18T02:21:08.661959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95873381f906418e93f41646a5728d573998c6ed679021d60e8480275e19d9af

Aliases

arxiv: 1207.0080 · arxiv_version: 1207.0080v1 · doi: 10.48550/arxiv.1207.0080 · pith_short_12: SWDTHAPZAZAY · pith_short_16: SWDTHAPZAZAY5E7U · pith_short_8: SWDTHAPZ

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/SWDTHAPZAZAY5E7UCZDKK4UNK4 \
  | 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: 95873381f906418e93f41646a5728d573998c6ed679021d60e8480275e19d9af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb947dfc4563d6af7791eb04848aca9602c2cb1e0ccd7660e3d452cd4b89ed99",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-06-30T11:22:19Z",
    "title_canon_sha256": "c9399e54911e08b7adee674c00a32abb8f55df389779c1d538fa7d7fa1098a77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0080",
    "kind": "arxiv",
    "version": 1
  }
}