Pith Number

pith:A3KVEIKT

pith:2009:A3KVEIKTEO7BOFSXRW2TCPG2FO

not attested not anchored not stored refs pending

An Exponential Time 2-Approximation Algorithm for Bandwidth

Martin F\"urer, Serge Gaspers, Shiva Prasad Kasiviswanathan

arxiv:0906.1953 v3 · 2009-06-10 · cs.DS · 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{A3KVEIKTEO7BOFSXRW2TCPG2FO}

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	2026-05-18T03:56:45.400099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06d552215323be1716578db5313cda2bac4099f3b7424cafa5be121e9a80f0da

Aliases

arxiv: 0906.1953 · arxiv_version: 0906.1953v3 · doi: 10.48550/arxiv.0906.1953 · pith_short_12: A3KVEIKTEO7B · pith_short_16: A3KVEIKTEO7BOFSX · pith_short_8: A3KVEIKT

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/A3KVEIKTEO7BOFSXRW2TCPG2FO \
  | 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: 06d552215323be1716578db5313cda2bac4099f3b7424cafa5be121e9a80f0da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1bbebcf0a708fe1628282dd9b580836c93a3117a47746bf0ab09177cea53870",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2009-06-10T15:22:57Z",
    "title_canon_sha256": "f3bd2367bda3fc426ee764a4926de7ca2c331797c381563c4e3246ba4694921b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1953",
    "kind": "arxiv",
    "version": 3
  }
}