Pith Number

pith:SWAAUOYB

pith:2013:SWAAUOYBRV2JLRKEYENUUZJAAG

not attested not anchored not stored refs pending

Another ham sandwich in the plane

Alexey Balitskiy, Alexey Garber, Roman Karasev

arxiv:1307.7698 v3 · 2013-07-29 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SWAAUOYBRV2JLRKEYENUUZJAAG}

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	2026-05-18T01:31:21.639614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95800a3b018d7495c544c11b4a6520018e787e493bcad60baf6a59c87ff51389

Aliases

arxiv: 1307.7698 · arxiv_version: 1307.7698v3 · doi: 10.48550/arxiv.1307.7698 · pith_short_12: SWAAUOYBRV2J · pith_short_16: SWAAUOYBRV2JLRKE · pith_short_8: SWAAUOYB

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/SWAAUOYBRV2JLRKEYENUUZJAAG \
  | 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: 95800a3b018d7495c544c11b4a6520018e787e493bcad60baf6a59c87ff51389

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e20652bf809f6df229a7b8c73c14d477e44ee28ba2effec7fe89a59e83d78640",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2013-07-29T19:43:54Z",
    "title_canon_sha256": "6c69a8d7d575a78486b082432a809a517f0836e606a67fbb75120d22e64acaac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7698",
    "kind": "arxiv",
    "version": 3
  }
}