Pith Number

pith:HHBJ6ID7

pith:2008:HHBJ6ID76DDHICDEQIZLTMOLFI

not attested not anchored not stored refs pending

Tropical geometric interpretation of ultradiscrete singularity confinement

Christopher M. Ormerod

arxiv:0802.1959 v2 · 2008-02-14 · math-ph · math.DS · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HHBJ6ID76DDHICDEQIZLTMOLFI}

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	2026-05-18T03:35:02.640043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39c29f207ff0c67408648232b9b1cb2a1b7360238b325bc80cd1b0331c4b9d49

Aliases

arxiv: 0802.1959 · arxiv_version: 0802.1959v2 · doi: 10.48550/arxiv.0802.1959 · pith_short_12: HHBJ6ID76DDH · pith_short_16: HHBJ6ID76DDHICDE · pith_short_8: HHBJ6ID7

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/HHBJ6ID76DDHICDEQIZLTMOLFI \
  | 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: 39c29f207ff0c67408648232b9b1cb2a1b7360238b325bc80cd1b0331c4b9d49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f0ec7d4d58c05d255936d42f449bfe4fea4a8f1ec7d8d3add00348e8cf4d19a",
    "cross_cats_sorted": [
      "math.DS",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-02-14T04:24:32Z",
    "title_canon_sha256": "a9d8ac5f974a56c3aded0fe5c3bf2d18025b3b95da3c0d968146f9c70f392dd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.1959",
    "kind": "arxiv",
    "version": 2
  }
}