Pith Number

pith:YZ4SC5RE

pith:2018:YZ4SC5REL5FUB6MRPOJ6LOBHAQ

not attested not anchored not stored refs pending

An EDG Method for Distributed Optimal Control of Elliptic PDEs

John R. Singler, Xiao Zhang, Yangwen Zhang

arxiv:1801.02978 v1 · 2018-01-06 · 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{YZ4SC5REL5FUB6MRPOJ6LOBHAQ}

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	2026-05-18T00:10:03.222991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6792176245f4b40f9917b93e5b8270417ccc080a55d266ee3bae10510a17124

Aliases

arxiv: 1801.02978 · arxiv_version: 1801.02978v1 · doi: 10.48550/arxiv.1801.02978 · pith_short_12: YZ4SC5REL5FU · pith_short_16: YZ4SC5REL5FUB6MR · pith_short_8: YZ4SC5RE

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/YZ4SC5REL5FUB6MRPOJ6LOBHAQ \
  | 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: c6792176245f4b40f9917b93e5b8270417ccc080a55d266ee3bae10510a17124

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "803fe0f7cefd96c31eb36614bca6961f3c1b4b04c4979fe5e27d01478fa30ce1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-01-06T16:25:29Z",
    "title_canon_sha256": "da2807300b2e9d80bf05b7e818806ba22f02d3c091fd4428ef67e13edd76945f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.02978",
    "kind": "arxiv",
    "version": 1
  }
}