Pith Number

pith:4SMA2DB4

pith:2019:4SMA2DB4QNE7SZFTQAC6BFVGAH

not attested not anchored not stored refs pending

A frictional contact problem with wear diffusion

Meir Shillor, Pawel Szafraniec, Piotr Kalita

arxiv:1901.07486 v1 · 2019-01-22 · math-ph · math.AP · 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{4SMA2DB4QNE7SZFTQAC6BFVGAH}

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	2026-05-17T23:42:24.515236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4980d0c3c8349f964b38005e096a601f0f6df257043e73e48183662d306572e

Aliases

arxiv: 1901.07486 · arxiv_version: 1901.07486v1 · doi: 10.48550/arxiv.1901.07486 · pith_short_12: 4SMA2DB4QNE7 · pith_short_16: 4SMA2DB4QNE7SZFT · pith_short_8: 4SMA2DB4

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/4SMA2DB4QNE7SZFTQAC6BFVGAH \
  | 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: e4980d0c3c8349f964b38005e096a601f0f6df257043e73e48183662d306572e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "266c9f77d6702c887f40027c3c08d83fce63b71dde0f4779c21927200b4db3cc",
    "cross_cats_sorted": [
      "math.AP",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2019-01-22T17:52:44Z",
    "title_canon_sha256": "60654ef4efff306674109fd43a5d7dff39d75ec9eff7f75a87ee696c9bf5869a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07486",
    "kind": "arxiv",
    "version": 1
  }
}