Pith Number

pith:AQ6DLM7Y

pith:2018:AQ6DLM7YSGMMHQFZQDEA5DSH7W

not attested not anchored not stored refs pending

Reduced basis methods- an application to variational discretization of parametrized elliptic optimal control problems

Ahmad Ahmad Ali, Michael Hinze

arxiv:1808.05687 v1 · 2018-08-16 · 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{AQ6DLM7YSGMMHQFZQDEA5DSH7W}

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	2026-05-18T00:07:54.572445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

043c35b3f89198c3c0b980c80e8e47fd948653c6cdf9e13e1181ae1c957de6b3

Aliases

arxiv: 1808.05687 · arxiv_version: 1808.05687v1 · doi: 10.48550/arxiv.1808.05687 · pith_short_12: AQ6DLM7YSGMM · pith_short_16: AQ6DLM7YSGMMHQFZ · pith_short_8: AQ6DLM7Y

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/AQ6DLM7YSGMMHQFZQDEA5DSH7W \
  | 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: 043c35b3f89198c3c0b980c80e8e47fd948653c6cdf9e13e1181ae1c957de6b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9919f8678ead67ca79037b4c98fda090a2e1b6f92e2827d32e58abcd6c4cb34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-08-16T21:49:15Z",
    "title_canon_sha256": "2e477a5f89465a030555a1086ac8dff5ce3ee0c6305a98a559f661664849ea3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05687",
    "kind": "arxiv",
    "version": 1
  }
}