Pith Number

pith:U6AQHLMZ

pith:2015:U6AQHLMZPBACJ67DGWBXPFPRDU

not attested not anchored not stored refs pending

Non-spurious solutions to discrete boundary value problems through variational methods

Ewa Schmeidel, Marek Galewski

arxiv:1503.01807 v1 · 2015-03-05 · math.CA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6AQHLMZPBACJ67DGWBXPFPRDU}

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	2026-05-18T02:25:27.509260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a78103ad99784024fbe335837795f11d09934f934801950590f5596a4065c44a

Aliases

arxiv: 1503.01807 · arxiv_version: 1503.01807v1 · doi: 10.48550/arxiv.1503.01807 · pith_short_12: U6AQHLMZPBAC · pith_short_16: U6AQHLMZPBACJ67D · pith_short_8: U6AQHLMZ

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/U6AQHLMZPBACJ67DGWBXPFPRDU \
  | 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: a78103ad99784024fbe335837795f11d09934f934801950590f5596a4065c44a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0630a41e5087b891f9889689ad8c00b220de79677013da3c6cde6c22caed8ed4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2015-03-05T22:25:33Z",
    "title_canon_sha256": "e2bf803ca3ce1c90469fb15d6cb28b441702194a04645b9534babab1cf2f40c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01807",
    "kind": "arxiv",
    "version": 1
  }
}