Pith Number

pith:S54SN2RJ

pith:2013:S54SN2RJ2LPDC4ISP25JZ72ZOU

not attested not anchored not stored refs pending

Improved Approximation Algorithms for Computing k Disjoint Paths Subject to Two Constraints

Hong Shen, Kewen Liao, Longkun Guo

arxiv:1301.5070 v2 · 2013-01-22 · cs.DS · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S54SN2RJ2LPDC4ISP25JZ72ZOU}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:29:06.347697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

977926ea29d2de3171127eba9cff59750ad9842710025574db371e1f51132ec0

Aliases

arxiv: 1301.5070 · arxiv_version: 1301.5070v2 · doi: 10.48550/arxiv.1301.5070 · pith_short_12: S54SN2RJ2LPD · pith_short_16: S54SN2RJ2LPDC4IS · pith_short_8: S54SN2RJ

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/S54SN2RJ2LPDC4ISP25JZ72ZOU \
  | 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: 977926ea29d2de3171127eba9cff59750ad9842710025574db371e1f51132ec0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10e6502df95a0d89c63617542299ac9da57bffce950c23f1138d7d8bc27cdfd3",
    "cross_cats_sorted": [
      "cs.NI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-01-22T04:52:06Z",
    "title_canon_sha256": "55eb474bd6f3fc803b9e738676b832def24f8fbd445c24717f1c2fa576ed17f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5070",
    "kind": "arxiv",
    "version": 2
  }
}