Pith Number

pith:XESG5VKG

pith:2018:XESG5VKGOHDD4POHD57CUTUOUK

not attested not anchored not stored refs pending

Optimal Partition of a Tree with Social Distance

Hirotaka Ono, Masahiro Okubo, Tesshu Hanaka

arxiv:1809.03392 v4 · 2018-09-10 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XESG5VKGOHDD4POHD57CUTUOUK}

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	2026-05-18T00:01:06.844402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9246ed54671c63e3dc71f7e2a4e8ea28ab7752f29d91ba319f5e55a93dd8d19

Aliases

arxiv: 1809.03392 · arxiv_version: 1809.03392v4 · doi: 10.48550/arxiv.1809.03392 · pith_short_12: XESG5VKGOHDD · pith_short_16: XESG5VKGOHDD4POH · pith_short_8: XESG5VKG

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/XESG5VKGOHDD4POHD57CUTUOUK \
  | 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: b9246ed54671c63e3dc71f7e2a4e8ea28ab7752f29d91ba319f5e55a93dd8d19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff7aad77a65e8c1d2189acfa11625f662ea41dce25efd49af3b67ea285586239",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-09-10T15:24:00Z",
    "title_canon_sha256": "a32de9d31090a65d52eb249bcf33bfcfb1d61eb33edda3b8c6ca09508b6615a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03392",
    "kind": "arxiv",
    "version": 4
  }
}