Pith Number

pith:VPLH7TUE

pith:2012:VPLH7TUEMMVVPLTJD3JLCH3GBJ

not attested not anchored not stored refs pending

Optimisation of energy and exergy of two-spool turbofan engines using genetic algorithms

Cristinel Mares, Kjetil Uhlen, Phen Chiak See, Vin Cent Tai

arxiv:1207.0743 v1 · 2012-07-03 · 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{VPLH7TUEMMVVPLTJD3JLCH3GBJ}

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	2026-05-18T03:51:49.183355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abd67fce84632b57ae691ed2b11f660a4fab486100d56d255aabdf5fa3034ff0

Aliases

arxiv: 1207.0743 · arxiv_version: 1207.0743v1 · doi: 10.48550/arxiv.1207.0743 · pith_short_12: VPLH7TUEMMVV · pith_short_16: VPLH7TUEMMVVPLTJ · pith_short_8: VPLH7TUE

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/VPLH7TUEMMVVPLTJD3JLCH3GBJ \
  | 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: abd67fce84632b57ae691ed2b11f660a4fab486100d56d255aabdf5fa3034ff0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f89113e7b9a1daab73f99ab6cfb6aefe352a4f18fb4140a18bc74018bbab13fd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-07-03T16:38:05Z",
    "title_canon_sha256": "2a21813dd89dc99c6336be8460c8222808e3caf96c58c58edc0d75af759581e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0743",
    "kind": "arxiv",
    "version": 1
  }
}