Pith Number

pith:XPK5ZE27

pith:2014:XPK5ZE27MKNKHHB2JFJ2OFCROL

not attested not anchored not stored refs pending

Approximability of the Minimum Weighted Doubly Resolving Set Problem

Changjun Wang, Xiaodong Hu, Xujin Chen

arxiv:1404.4676 v1 · 2014-04-18 · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPK5ZE27MKNKHHB2JFJ2OFCROL}

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	2026-05-18T02:53:55.450039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbd5dc935f629aa39c3a4953a7145172fd18efabbba6a777008ecc3b7faf7ec3

Aliases

arxiv: 1404.4676 · arxiv_version: 1404.4676v1 · doi: 10.48550/arxiv.1404.4676 · pith_short_12: XPK5ZE27MKNK · pith_short_16: XPK5ZE27MKNKHHB2 · pith_short_8: XPK5ZE27

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/XPK5ZE27MKNKHHB2JFJ2OFCROL \
  | 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: bbd5dc935f629aa39c3a4953a7145172fd18efabbba6a777008ecc3b7faf7ec3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef5fda30650053f28f15590412886f39eceefa2f519263e063c55ab1c5866740",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2014-04-18T01:45:34Z",
    "title_canon_sha256": "26988dbcce3b0f0cf02350cd87b397b8635b9f2d91d146b4bed58f25d1b8fa42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.4676",
    "kind": "arxiv",
    "version": 1
  }
}