Pith Number

pith:DXQ66IBR

pith:2009:DXQ66IBRHCX5W6R2WXOI3IH5F2

not attested not anchored not stored refs pending

Error estimates for joint Tikhonov- and Lavrentiev-regularization of constrained control problems

Arnd R\"osch, Dirk A. Lorenz

arxiv:0909.4648 v1 · 2009-09-25 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DXQ66IBRHCX5W6R2WXOI3IH5F2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:38:50.830213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1de1ef203138afdb7a3ab5dc8da0fd2eb7cb2bc187e86f4408b46a85bca822c0

Aliases

arxiv: 0909.4648 · arxiv_version: 0909.4648v1 · doi: 10.48550/arxiv.0909.4648 · pith_short_12: DXQ66IBRHCX5 · pith_short_16: DXQ66IBRHCX5W6R2 · pith_short_8: DXQ66IBR

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/DXQ66IBRHCX5W6R2WXOI3IH5F2 \
  | 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: 1de1ef203138afdb7a3ab5dc8da0fd2eb7cb2bc187e86f4408b46a85bca822c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e11dea24b4be9a45f541dd4f5d5a08e31092fb85c47f89e3df3279efdfb50cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-09-25T09:17:25Z",
    "title_canon_sha256": "577fc9ba408347433ce08fe6bed246ae8ba49510d4e67fe815a03fde7292f50d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4648",
    "kind": "arxiv",
    "version": 1
  }
}