Pith Number

pith:L4LA7UAP

pith:2009:L4LA7UAPHUKZH555SNPNV7P4W3

not attested not anchored not stored refs pending

Ham Sandwich with Mayo: A Stronger Conclusion to the Classical Ham Sandwich Theorem

John H. Elton, Theodore P. Hill

arxiv:0901.2589 v3 · 2009-01-16 · math.MG · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L4LA7UAPHUKZH555SNPNV7P4W3}

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	2026-05-18T04:14:06.073914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f160fd00f3d1593f7bd935edafdfcb6d5dcf0e179b1ea47164387705901f3c3

Aliases

arxiv: 0901.2589 · arxiv_version: 0901.2589v3 · doi: 10.48550/arxiv.0901.2589 · pith_short_12: L4LA7UAPHUKZ · pith_short_16: L4LA7UAPHUKZH555 · pith_short_8: L4LA7UAP

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/L4LA7UAPHUKZH555SNPNV7P4W3 \
  | 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: 5f160fd00f3d1593f7bd935edafdfcb6d5dcf0e179b1ea47164387705901f3c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a2532c8b2b3043c320682cf4fa830dfc87341f4343655316c1374e40dc4eb68",
    "cross_cats_sorted": [
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2009-01-16T22:30:20Z",
    "title_canon_sha256": "cae7aea9067cc9740eaf4b8e743e39eb2c1b02de6935d6f7fdee6a8bbcbc8fd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2589",
    "kind": "arxiv",
    "version": 3
  }
}