Pith Number

pith:MPMDIWUZ

pith:2019:MPMDIWUZHEIJAZ4I4AXW5YZTCS

not attested not anchored not stored refs pending

Hill's equation, tire tracks and rolling cones

Gil Bor, Mark Levi

arxiv:1908.04965 v3 · 2019-08-14 · math.DG · math-ph · 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{MPMDIWUZHEIJAZ4I4AXW5YZTCS}

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	2026-07-05T00:56:29.760310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63d8345a993910906788e02f6ee3331480146371b034b60b7a459f91f5767196

Aliases

arxiv: 1908.04965 · arxiv_version: 1908.04965v3 · doi: 10.48550/arxiv.1908.04965 · pith_short_12: MPMDIWUZHEIJ · pith_short_16: MPMDIWUZHEIJAZ4I · pith_short_8: MPMDIWUZ

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/MPMDIWUZHEIJAZ4I4AXW5YZTCS \
  | 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: 63d8345a993910906788e02f6ee3331480146371b034b60b7a459f91f5767196

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09acd83c14eb701653706daf65cc6f44efec911b511fed76421601fd62c52e77",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-08-14T05:44:24Z",
    "title_canon_sha256": "4eb8753ddd45ad721172146646a31b2a266a78afb786f16e26dcba6caaed5eda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04965",
    "kind": "arxiv",
    "version": 3
  }
}