Pith Number

pith:HPSCXLSD

pith:2021:HPSCXLSDCF7BGIMOOVQXVYJHKD

not attested not anchored not stored refs pending

Approximation algorithms for the directed path partition problems

An Zhang, Curtis Kennedy, Guohui Lin, Yao Xu, Yong Chen, Zhi-Zhong Chen

arxiv:2107.04699 v1 · 2021-07-09 · 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{HPSCXLSDCF7BGIMOOVQXVYJHKD}

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	2026-07-05T02:56:41.747411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3be42bae43117e13218e75617ae12750db20211e2ff3051cd0306d7a0d10a64c

Aliases

arxiv: 2107.04699 · arxiv_version: 2107.04699v1 · doi: 10.48550/arxiv.2107.04699 · pith_short_12: HPSCXLSDCF7B · pith_short_16: HPSCXLSDCF7BGIMO · pith_short_8: HPSCXLSD

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/HPSCXLSDCF7BGIMOOVQXVYJHKD \
  | 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: 3be42bae43117e13218e75617ae12750db20211e2ff3051cd0306d7a0d10a64c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da21c52daaebaf0ae3cd370a436032278e1f1410074ea713d93e78f38d0751e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-07-09T22:21:02Z",
    "title_canon_sha256": "3fc7ddadf44697902a3f1affaa1813a22a1cef11a3f48da8fdc9abc03da15140"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.04699",
    "kind": "arxiv",
    "version": 1
  }
}