Pith Number

pith:WI4XX2QU

pith:2018:WI4XX2QUVTK2QVYZJXLIDVGDS7

not attested not anchored not stored refs pending

A low-rank tensor method for PDE-constrained optimization with isogeometric analysis

Alexandra B\"unger, Martin Stoll, Sergey Dolgov

arxiv:1811.06797 v2 · 2018-11-16 · 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{WI4XX2QUVTK2QVYZJXLIDVGDS7}

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	2026-05-18T00:00:07.788814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2397bea14acd5a857194dd681d4c397e2a2c0ac61eba7e14a906d2da1ed1de4

Aliases

arxiv: 1811.06797 · arxiv_version: 1811.06797v2 · doi: 10.48550/arxiv.1811.06797 · pith_short_12: WI4XX2QUVTK2 · pith_short_16: WI4XX2QUVTK2QVYZ · pith_short_8: WI4XX2QU

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/WI4XX2QUVTK2QVYZJXLIDVGDS7 \
  | 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: b2397bea14acd5a857194dd681d4c397e2a2c0ac61eba7e14a906d2da1ed1de4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a551a72acbb05649aa66727ef8f7718e75d786a03c20c18e8601a323a8f0f1b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-11-16T13:25:04Z",
    "title_canon_sha256": "d7450720fb15e4617a654b1d68a405de74b82b018cf291d748161bf44ea3aa05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06797",
    "kind": "arxiv",
    "version": 2
  }
}