Pith Number

pith:FQW6QSZ6

pith:2019:FQW6QSZ66WPPZLCF6RWN4R4K3T

not attested not anchored not stored refs pending

A Linearly-growing Conversion from the Set Splitting Problem to the Directed Hamiltonian Cycle Problem

Jerzy Filar, Michael Haythorpe

arxiv:1902.10354 v1 · 2019-02-27 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQW6QSZ66WPPZLCF6RWN4R4K3T}

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	2026-05-17T23:52:31.087922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c2de84b3ef59efcac45f46cde478adcca2e0428bc699de809b48592ff85bf8b

Aliases

arxiv: 1902.10354 · arxiv_version: 1902.10354v1 · doi: 10.48550/arxiv.1902.10354 · pith_short_12: FQW6QSZ66WPP · pith_short_16: FQW6QSZ66WPPZLCF · pith_short_8: FQW6QSZ6

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/FQW6QSZ66WPPZLCF6RWN4R4K3T \
  | 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: 2c2de84b3ef59efcac45f46cde478adcca2e0428bc699de809b48592ff85bf8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "584af98b2178ae2c9646d3c55068b4c1888c2e7948969194a56358d3285cf957",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-02-27T06:36:45Z",
    "title_canon_sha256": "729fee1db5dd4651fa4d2dd1d10ca1a0e63fa8d37f210bdf41560a36abe49449"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10354",
    "kind": "arxiv",
    "version": 1
  }
}