Pith Number

pith:IWG26CPX

pith:2014:IWG26CPX6BDKNRZFHU7DFRG3IF

not attested not anchored not stored refs pending

Regularization Parameter Estimation for Underdetermined problems by the $\chi^2$ principle with application to $2D$ focusing gravity inversion

Rosemary A Renaut, Saeed Vatankhah, Vahid E Ardestani

arxiv:1402.3365 v2 · 2014-02-14 · math.NA · cs.NA · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWG26CPX6BDKNRZFHU7DFRG3IF}

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	2026-06-04T14:09:25.579110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

458daf09f7f046a6c7253d3e32c4db415521ba1cc30664c2f2ad22ac89dca112

Aliases

arxiv: 1402.3365 · arxiv_version: 1402.3365v2 · doi: 10.48550/arxiv.1402.3365 · pith_short_12: IWG26CPX6BDK · pith_short_16: IWG26CPX6BDKNRZF · pith_short_8: IWG26CPX

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/IWG26CPX6BDKNRZFHU7DFRG3IF \
  | 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: 458daf09f7f046a6c7253d3e32c4db415521ba1cc30664c2f2ad22ac89dca112

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ba4387a37eccbf45f0e7373bc5f4f03c883a4e8fab8aa9d9cc4cd3369eb7fd6",
    "cross_cats_sorted": [
      "cs.NA",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-02-14T05:14:23Z",
    "title_canon_sha256": "1dfd117f69ae63d9baa65b99d51264a97fb76f4974b598dce846859120f05583"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3365",
    "kind": "arxiv",
    "version": 2
  }
}