Pith Number

pith:IRGYMJT7

pith:2006:IRGYMJT7QQ4OMUN5NOOK7MYJX3

not attested not anchored not stored refs pending

New Upper Bounds on The Approximability of 3D Strip Packing

Guochuan Zhang, Kazuo Iwama, Xin Han

arxiv:cs/0607100 v1 · 2006-07-22 · 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{IRGYMJT7QQ4OMUN5NOOK7MYJX3}

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	2026-07-04T14:55:25.264286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

444d86267f8438e651bd6b9cafb309beddb0e52b454f76bfbbec656b3d096380

Aliases

arxiv: cs/0607100 · arxiv_version: cs/0607100v1 · doi: 10.48550/arxiv.cs/0607100 · pith_short_12: IRGYMJT7QQ4O · pith_short_16: IRGYMJT7QQ4OMUN5 · pith_short_8: IRGYMJT7

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/IRGYMJT7QQ4OMUN5NOOK7MYJX3 \
  | 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: 444d86267f8438e651bd6b9cafb309beddb0e52b454f76bfbbec656b3d096380

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a6111a08cad19e284e935e64f187533f92b3c4b0a4147c5640eb62289c02825",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.DS",
    "submitted_at": "2006-07-22T02:06:26Z",
    "title_canon_sha256": "8a2eb2d440d92d30039847617aafab622da47e4633ee2bdf69b4bd3bc646a887"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0607100",
    "kind": "arxiv",
    "version": 1
  }
}