Pith Number

pith:H55PYIC4

pith:2014:H55PYIC442DLKUV7CFNY4HQ57J

not attested not anchored not stored refs pending

Analyzing the concept of super-efficiency in data envelopment analysis: A directional distance function approach

Israfil Roshdi, Mahmood Mehdiloozad

arxiv:1407.2599 v1 · 2014-07-09 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H55PYIC442DLKUV7CFNY4HQ57J}

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	2026-05-18T02:48:01.254795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f7afc205ce686b552bf115b8e1e1dfa5a13c2b3562533122f0455b8c3bb0214

Aliases

arxiv: 1407.2599 · arxiv_version: 1407.2599v1 · doi: 10.48550/arxiv.1407.2599 · pith_short_12: H55PYIC442DL · pith_short_16: H55PYIC442DLKUV7 · pith_short_8: H55PYIC4

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/H55PYIC442DLKUV7CFNY4HQ57J \
  | 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: 3f7afc205ce686b552bf115b8e1e1dfa5a13c2b3562533122f0455b8c3bb0214

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7c5354e4d05fabae856322fbaaf603816d2b80847801da7934f8ddecf60b12d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-07-09T19:43:29Z",
    "title_canon_sha256": "39375e5e563e75a7475857aa325ec9020a8fbf909490400f116269d6d1ce2166"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2599",
    "kind": "arxiv",
    "version": 1
  }
}