Pith Number

pith:TXHJY6QS

pith:2017:TXHJY6QSSBYRQ4JH4ZJ3A4Y5W4

not attested not anchored not stored refs pending

Tikhonov regularization of optimal control problems governed by semi-linear partial differential equations

Daniel Wachsmuth, Frank P\"orner

arxiv:1705.01427 v1 · 2017-05-03 · 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{TXHJY6QSSBYRQ4JH4ZJ3A4Y5W4}

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	2026-05-18T00:45:05.200407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dce9c7a129071187127e653b0731db70372ac3bf14951ee2fd8c88fe9423dfa

Aliases

arxiv: 1705.01427 · arxiv_version: 1705.01427v1 · doi: 10.48550/arxiv.1705.01427 · pith_short_12: TXHJY6QSSBYR · pith_short_16: TXHJY6QSSBYRQ4JH · pith_short_8: TXHJY6QS

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/TXHJY6QSSBYRQ4JH4ZJ3A4Y5W4 \
  | 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: 9dce9c7a129071187127e653b0731db70372ac3bf14951ee2fd8c88fe9423dfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e39fede121f70becbd3991130106b6537749edd18cf64333d18f7e115309f6cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-05-03T13:45:22Z",
    "title_canon_sha256": "9438a43979b27fe78e54edd65470e08f2a5fdce7ca8a85aba8531719d4642311"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.01427",
    "kind": "arxiv",
    "version": 1
  }
}