Pith Number

pith:KNH7Q6RY

pith:2017:KNH7Q6RYCGNFBZMMPLVD2FJR2N

not attested not anchored not stored refs pending

Error estimates for Dirichlet control problems in polygonal domains

Arnd R\"osch, Johannes Pfefferer, Mariano Mateos, Thomas Apel

arxiv:1704.08843 v1 · 2017-04-28 · 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{KNH7Q6RYCGNFBZMMPLVD2FJR2N}

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	2026-05-17T23:55:34.759056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

534ff87a38119a50e58c7aea3d1531d346e87786a728535cafa8e5e9d8a39e46

Aliases

arxiv: 1704.08843 · arxiv_version: 1704.08843v1 · doi: 10.48550/arxiv.1704.08843 · pith_short_12: KNH7Q6RYCGNF · pith_short_16: KNH7Q6RYCGNFBZMM · pith_short_8: KNH7Q6RY

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/KNH7Q6RYCGNFBZMMPLVD2FJR2N \
  | 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: 534ff87a38119a50e58c7aea3d1531d346e87786a728535cafa8e5e9d8a39e46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f635981b47ff3b50a89ecd7ce6fda955221f1e84f340b3eba4e4c3c211a955d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-04-28T08:30:45Z",
    "title_canon_sha256": "5474ab90512ead4c408f621832081df25d4ab9ac42d06aecc7b0bdef6b40ba7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.08843",
    "kind": "arxiv",
    "version": 1
  }
}