Pith Number

pith:PMNBWBNG

pith:2014:PMNBWBNGEJXPS6KZQDMDYZ37YI

not attested not anchored not stored refs pending

On $k$-piecewise testability (preliminary report)

Micha\"el Thomazo, Tom\'a\v{s} Masopust

arxiv:1412.1641 v2 · 2014-12-04 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PMNBWBNGEJXPS6KZQDMDYZ37YI}

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	2026-05-18T01:55:42.582899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b1a1b05a6226ef9795980d83c677fc21ce33cf00863422f15ed0f8205cf73d6

Aliases

arxiv: 1412.1641 · arxiv_version: 1412.1641v2 · doi: 10.48550/arxiv.1412.1641 · pith_short_12: PMNBWBNGEJXP · pith_short_16: PMNBWBNGEJXPS6KZ · pith_short_8: PMNBWBNG

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/PMNBWBNGEJXPS6KZQDMDYZ37YI \
  | 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: 7b1a1b05a6226ef9795980d83c677fc21ce33cf00863422f15ed0f8205cf73d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89df9472f53b3813c3879773dc70172a7a450d5e6ff9616881deac13d4fa49e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-12-04T12:27:07Z",
    "title_canon_sha256": "9d5b5e2ea7c814bb90e751fdaa96d381a304cb4db5575b45fa144ab142a9a3f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1641",
    "kind": "arxiv",
    "version": 2
  }
}