Pith Number

pith:NNSBK4ZB

pith:2011:NNSBK4ZBBCCGODH22HC2LKTGJA

not attested not anchored not stored refs pending

New Improvements on the Echelon-Ferrers Construction

Anna-Lena Trautmann, Joachim Rosenthal

arxiv:1110.2417 v2 · 2011-10-11 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNSBK4ZBBCCGODH22HC2LKTGJA}

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	2026-05-18T02:20:48.106040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b641573210884670cfad1c5a5aa66483deaaf4f00df043901109197b501f057

Aliases

arxiv: 1110.2417 · arxiv_version: 1110.2417v2 · doi: 10.48550/arxiv.1110.2417 · pith_short_12: NNSBK4ZBBCCG · pith_short_16: NNSBK4ZBBCCGODH2 · pith_short_8: NNSBK4ZB

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/NNSBK4ZBBCCGODH22HC2LKTGJA \
  | 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: 6b641573210884670cfad1c5a5aa66483deaaf4f00df043901109197b501f057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93554a47cc4483870f17cf4b89838a8c034113f75abe15938ee83600be5f05d4",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-10-11T16:25:10Z",
    "title_canon_sha256": "aa745cb1cd8f4baad017d61a50f70231e1b17a3cb836d4df7c4b70fdd452f69c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2417",
    "kind": "arxiv",
    "version": 2
  }
}