Pith Number

pith:QU6DPSJN

pith:2016:QU6DPSJNG2GMVJJTIMSMKZVWRE

not attested not anchored not stored refs pending

On convexification/optimization of functionals including an l2-misfit term

Marcus Carlsson

arxiv:1609.09378 v4 · 2016-09-29 · math.OC · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QU6DPSJNG2GMVJJTIMSMKZVWRE}

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	2026-05-18T00:01:15.516361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

853c37c92d368ccaa5334324c566b6893c79d9fb2d42390e6f99deef93b67414

Aliases

arxiv: 1609.09378 · arxiv_version: 1609.09378v4 · doi: 10.48550/arxiv.1609.09378 · pith_short_12: QU6DPSJNG2GM · pith_short_16: QU6DPSJNG2GMVJJT · pith_short_8: QU6DPSJN

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/QU6DPSJNG2GMVJJTIMSMKZVWRE \
  | 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: 853c37c92d368ccaa5334324c566b6893c79d9fb2d42390e6f99deef93b67414

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88a127fb25a8214b9933e092a68f3cd45864c891b36cf35e0f6b000569da8941",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-09-29T15:04:36Z",
    "title_canon_sha256": "c9382376c2e13bca1d5c27c2eeb3d56f8b31edd77f2d818abf3b2f689c0dbad5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.09378",
    "kind": "arxiv",
    "version": 4
  }
}