Pith Number

pith:WYN4D2ZY

pith:2014:WYN4D2ZYQQOHGBUW7TLTV54G33

not attested not anchored not stored refs pending

Progressive construction of a parametric reduced-order model for PDE-constrained optimization

Charbel Farhat, Matthew J. Zahr

arxiv:1407.7618 v1 · 2014-07-29 · math.OC · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WYN4D2ZYQQOHGBUW7TLTV54G33}

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	2026-05-18T02:46:22.195531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b61bc1eb38841c730696fcd73af786dee54ba51b34751c823708a7732b4411c7

Aliases

arxiv: 1407.7618 · arxiv_version: 1407.7618v1 · doi: 10.48550/arxiv.1407.7618 · pith_short_12: WYN4D2ZYQQOH · pith_short_16: WYN4D2ZYQQOHGBUW · pith_short_8: WYN4D2ZY

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/WYN4D2ZYQQOHGBUW7TLTV54G33 \
  | 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: b61bc1eb38841c730696fcd73af786dee54ba51b34751c823708a7732b4411c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35d8ff15b06094dd093064abc6b67277faa0b1d6c509ccf0ad4006173c1d9265",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-07-29T02:36:41Z",
    "title_canon_sha256": "73970514aa200e01daf9fae134f4055e8b835dbcdb3eb8316a46ea0750786259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.7618",
    "kind": "arxiv",
    "version": 1
  }
}