Pith Number

pith:IB7344C5

pith:2018:IB7344C5IUHMJPRQEVPEEJSUUO

not attested not anchored not stored refs pending

Contingent derivatives and regularization for noncoercive inverse problems

Akhtar A. Khan, Christian Clason, Christiane Tammer, Miguel Sama

arxiv:1802.05062 v1 · 2018-02-14 · math.OC · 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{IB7344C5IUHMJPRQEVPEEJSUUO}

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	2026-05-18T00:08:48.263200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

407fbe705d450ec4be30255e422654a3acd8e2b51a50c2c81725c5d1ac354dba

Aliases

arxiv: 1802.05062 · arxiv_version: 1802.05062v1 · doi: 10.48550/arxiv.1802.05062 · pith_short_12: IB7344C5IUHM · pith_short_16: IB7344C5IUHMJPRQ · pith_short_8: IB7344C5

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/IB7344C5IUHMJPRQEVPEEJSUUO \
  | 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: 407fbe705d450ec4be30255e422654a3acd8e2b51a50c2c81725c5d1ac354dba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf2f164b2c979f1cfcf75b86233d0253526e0d1614b20d0a2557755839a5259e",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-02-14T12:22:35Z",
    "title_canon_sha256": "ac047e7f3f9529b4e2e8be9f607f45c2fb515bbdd8f73f43163210f737d2de71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05062",
    "kind": "arxiv",
    "version": 1
  }
}