Pith Number

pith:MJNSGPXQ

pith:2019:MJNSGPXQURCERJX2EDF5BAGOLV

not attested not anchored not stored refs pending

Optimization of drug controlled release from multi-laminated devices based on the modified Tikhonov regularization method

Ling Ma, Xinming Zhang

arxiv:1904.05999 v1 · 2019-04-12 · math.NA · 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{MJNSGPXQURCERJX2EDF5BAGOLV}

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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	2026-05-17T23:48:44.562009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

625b233ef0a44448a6fa20cbd080ce5d5b38b8a887b22522b2cee5809a4819bb

Aliases

arxiv: 1904.05999 · arxiv_version: 1904.05999v1 · doi: 10.48550/arxiv.1904.05999 · pith_short_12: MJNSGPXQURCE · pith_short_16: MJNSGPXQURCERJX2 · pith_short_8: MJNSGPXQ

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/MJNSGPXQURCERJX2EDF5BAGOLV \
  | 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: 625b233ef0a44448a6fa20cbd080ce5d5b38b8a887b22522b2cee5809a4819bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00496088f62504de858b43c79db4367e6e1c1a9c5c5f83a7147a6d42d8246722",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-12T01:35:34Z",
    "title_canon_sha256": "90bb4d9a669ad314f6ede3e85bf3160d5bf5c4d966fcebe6a94f96e41b2c2273"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05999",
    "kind": "arxiv",
    "version": 1
  }
}