Pith Number

pith:7HPIHUY7

pith:2022:7HPIHUY7CEXCR4LWTMLO2CYIUD

not attested not anchored not stored refs pending

A nonsmooth primal-dual method with interwoven PDE constraint solver

Bj{\o}rn Jensen, Tuomo Valkonen

arxiv:2211.04807 v3 · 2022-11-09 · math.OC · cs.NA · 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{7HPIHUY7CEXCR4LWTMLO2CYIUD}

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.

Cited by

1 paper in Pith

Dynamic inverse problems: Single-loop online algorithms

Receipt and verification

First computed	2026-07-05T08:29:13.302885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9de83d31f112e28f1769b16ed0b08a0fc6480ab0e46e57ca6a27364a615cd77

Aliases

arxiv: 2211.04807 · arxiv_version: 2211.04807v3 · doi: 10.48550/arxiv.2211.04807 · pith_short_12: 7HPIHUY7CEXC · pith_short_16: 7HPIHUY7CEXCR4LW · pith_short_8: 7HPIHUY7

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/7HPIHUY7CEXCR4LWTMLO2CYIUD \
  | 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: f9de83d31f112e28f1769b16ed0b08a0fc6480ab0e46e57ca6a27364a615cd77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7a3c04f3c5b4548397014a13d7370f563d7d02a7f0fc385dce6ec7b81847eec",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-11-09T11:09:19Z",
    "title_canon_sha256": "2f56337030f26f74287c8aad1be8dcbdbc227857ed32174b940e6d8e97c3e361"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.04807",
    "kind": "arxiv",
    "version": 3
  }
}