Pith Number

pith:7KMSTHP4

pith:2017:7KMSTHP4TFSFMW7DPMJWQXSMR3

not attested not anchored not stored refs pending

A posteriori error estimation for finite element approximations of a PDE-constrained optimization problem in fluid dynamics

Alejandro Allendes, Enrique Otarola, Richard Rankin

arxiv:1708.00590 v1 · 2017-08-02 · 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{7KMSTHP4TFSFMW7DPMJWQXSMR3}

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	2026-05-18T00:38:45.305205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa99299dfc9964565be37b13685e4c8ecb7fc8f60da6cd4fa57fab9e19e08670

Aliases

arxiv: 1708.00590 · arxiv_version: 1708.00590v1 · doi: 10.48550/arxiv.1708.00590 · pith_short_12: 7KMSTHP4TFSF · pith_short_16: 7KMSTHP4TFSFMW7D · pith_short_8: 7KMSTHP4

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/7KMSTHP4TFSFMW7DPMJWQXSMR3 \
  | 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: fa99299dfc9964565be37b13685e4c8ecb7fc8f60da6cd4fa57fab9e19e08670

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73aededd7f6a5d6e7aca3dc2f673363b4ceb2bc154832e87625c64e916aa2cf7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-08-02T03:37:18Z",
    "title_canon_sha256": "e7f1cdbd85eb8ed295062203838512a5479f93c46660e07ade66e5e26bae7211"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.00590",
    "kind": "arxiv",
    "version": 1
  }
}