Pith Number

pith:FULTCGQZ

pith:2017:FULTCGQZOSBBDTMPHDIJ55G5WK

not attested not anchored not stored refs pending

Parametric/Stochastic Model Reduction: Low-Rank Representation, Non-Intrusive Bi-Fidelity Approximation, and Convergence Analysis

Akil Narayan, Alireza Doostan, Hillary Fairbanks, Jerrad Hampton

arxiv:1709.03661 v1 · 2017-09-12 · 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{FULTCGQZOSBBDTMPHDIJ55G5WK}

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	2026-05-18T00:35:29.885551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d17311a19748211cd8f38d09ef4ddb295b247abc5019e201b6b564dc319dd6b

Aliases

arxiv: 1709.03661 · arxiv_version: 1709.03661v1 · doi: 10.48550/arxiv.1709.03661 · pith_short_12: FULTCGQZOSBB · pith_short_16: FULTCGQZOSBBDTMP · pith_short_8: FULTCGQZ

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/FULTCGQZOSBBDTMPHDIJ55G5WK \
  | 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: 2d17311a19748211cd8f38d09ef4ddb295b247abc5019e201b6b564dc319dd6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02b7cfd5d1e7e1373506a0f50373a8d158c5b96001db6fa86de204c9b0bc8198",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-09-12T02:35:16Z",
    "title_canon_sha256": "ebe96b08f2fb265b4563cd4c6b57acc0012d888bb47950de9c33547a1de24217"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03661",
    "kind": "arxiv",
    "version": 1
  }
}