Pith Number

pith:5S3G4BWU

pith:2019:5S3G4BWUHMOLGWJMGJNX7MDTGU

not attested not anchored not stored refs pending

Adaptive Strategies For Efficient Model Reduction In High-Dimensional Inverse Problems

Aleksey Khlyupin, Andrei Mukhin

arxiv:1903.07220 v1 · 2019-03-18 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5S3G4BWUHMOLGWJMGJNX7MDTGU}

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	2026-05-17T23:51:03.892443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecb66e06d43b1cb3592c325b7fb0733516aa24114aa8894ad767841bfbe0cfa4

Aliases

arxiv: 1903.07220 · arxiv_version: 1903.07220v1 · doi: 10.48550/arxiv.1903.07220 · pith_short_12: 5S3G4BWUHMOL · pith_short_16: 5S3G4BWUHMOLGWJM · pith_short_8: 5S3G4BWU

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/5S3G4BWUHMOLGWJMGJNX7MDTGU \
  | 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: ecb66e06d43b1cb3592c325b7fb0733516aa24114aa8894ad767841bfbe0cfa4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8a6d6e0a4c5fb39241d6b9c4518d2925eb7a8cc342ac628e32813a994af0b83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-18T01:17:12Z",
    "title_canon_sha256": "9fa20806d8fdc1a4a13053034515a64a4a4c1fe99311aba6293c6230aa932cf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07220",
    "kind": "arxiv",
    "version": 1
  }
}