Pith Number

pith:37QXDW6P

pith:2019:37QXDW6P5SRHAUUSUNTR6PL3BS

not attested not anchored not stored refs pending

An algorithmic approach to the multiple impact of a disk in a corner

Claudia Fassino, Stefano Pasquero

arxiv:1902.05147 v1 · 2019-02-06 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37QXDW6P5SRHAUUSUNTR6PL3BS}

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	2026-05-17T23:54:01.808746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfe171dbcfeca2705292a3671f3d7b0c85de45cb51689bd6d935889af1bd8d7a

Aliases

arxiv: 1902.05147 · arxiv_version: 1902.05147v1 · doi: 10.48550/arxiv.1902.05147 · pith_short_12: 37QXDW6P5SRH · pith_short_16: 37QXDW6P5SRHAUUS · pith_short_8: 37QXDW6P

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/37QXDW6P5SRHAUUSUNTR6PL3BS \
  | 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: dfe171dbcfeca2705292a3671f3d7b0c85de45cb51689bd6d935889af1bd8d7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac7208488429b1ac013c86654114d4e5578f9300c591ae52543075cc5b2f7ed2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-06T09:02:35Z",
    "title_canon_sha256": "8bbaafbcaaf3df33ad12556235dfd78c451540ff21549a7661554d4e37dc1df3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05147",
    "kind": "arxiv",
    "version": 1
  }
}