Pith Number

pith:HWFINQHB

pith:2011:HWFINQHBS6O2FLVK7OHFIDNUIS

not attested not anchored not stored refs pending

Multi-parameter Tikhonov Regularisation in Topological Spaces

Markus Grasmair

arxiv:1109.0364 v1 · 2011-09-02 · 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{HWFINQHBS6O2FLVK7OHFIDNUIS}

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	2026-05-18T04:14:15.871365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d8a86c0e1979da2aeaafb8e540db444888b14a795759e86999c0d96c4dce142

Aliases

arxiv: 1109.0364 · arxiv_version: 1109.0364v1 · doi: 10.48550/arxiv.1109.0364 · pith_short_12: HWFINQHBS6O2 · pith_short_16: HWFINQHBS6O2FLVK · pith_short_8: HWFINQHB

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/HWFINQHBS6O2FLVK7OHFIDNUIS \
  | 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: 3d8a86c0e1979da2aeaafb8e540db444888b14a795759e86999c0d96c4dce142

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08312ce1f188fb13f7f4912212e20b0f7ec5189e4aadb524d7dad5e515da1283",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-09-02T06:47:07Z",
    "title_canon_sha256": "c6f28e9379c74b22815cea020441c0dac83a0d392d8120ab7c0d7c4c7e06b85b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0364",
    "kind": "arxiv",
    "version": 1
  }
}