Pith Number

pith:LJ3R4KCP

pith:2015:LJ3R4KCPEP53HR4QTHLUZQMQR5

not attested not anchored not stored refs pending

A regularizing iterative ensemble Kalman method for PDE-constrained inverse problems

Marco A. Iglesias

arxiv:1505.03876 v1 · 2015-05-14 · 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{LJ3R4KCPEP53HR4QTHLUZQMQR5}

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	2026-05-18T01:22:40.192942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a771e284f23fbb3c79099d74cc1908f5de84a63158372b1cef4747d1907343e

Aliases

arxiv: 1505.03876 · arxiv_version: 1505.03876v1 · doi: 10.48550/arxiv.1505.03876 · pith_short_12: LJ3R4KCPEP53 · pith_short_16: LJ3R4KCPEP53HR4Q · pith_short_8: LJ3R4KCP

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/LJ3R4KCPEP53HR4QTHLUZQMQR5 \
  | 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: 5a771e284f23fbb3c79099d74cc1908f5de84a63158372b1cef4747d1907343e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9fb8de520a018429c3855ebaad0569130ee991ab5a8143a3a20be45cb448d3c",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-05-14T20:20:14Z",
    "title_canon_sha256": "dd92d10614f6c5121538cf03dc0598038e171247af1063bf91fcd4de823d3060"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03876",
    "kind": "arxiv",
    "version": 1
  }
}