Pith Number

pith:DTFG5KTX

pith:2017:DTFG5KTX6RCNL7FZPD4G5LCFH4

not attested not anchored not stored refs pending

Efficient generalized Golub-Kahan based methods for dynamic inverse problems

Arvind K. Saibaba, Erik Westman, Julianne Chung, Matthew Brown

arxiv:1705.09342 v1 · 2017-05-25 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DTFG5KTX6RCNL7FZPD4G5LCFH4}

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	2026-05-18T00:23:45.642938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cca6eaa77f444d5fcb978f86eac453f01ce5e71342bd3bde5b68cd592c0bba0

Aliases

arxiv: 1705.09342 · arxiv_version: 1705.09342v1 · doi: 10.48550/arxiv.1705.09342 · pith_short_12: DTFG5KTX6RCN · pith_short_16: DTFG5KTX6RCNL7FZ · pith_short_8: DTFG5KTX

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/DTFG5KTX6RCNL7FZPD4G5LCFH4 \
  | 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: 1cca6eaa77f444d5fcb978f86eac453f01ce5e71342bd3bde5b68cd592c0bba0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58b192ac4047a9fa9b28bf71d49a067fcc2c2564316dd44536b2d717413e9d9d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-05-25T20:04:03Z",
    "title_canon_sha256": "c560cc4b9bc3dbfd0b8cc7bccef426671ce054e0984a08ecd33bd3553e246e22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.09342",
    "kind": "arxiv",
    "version": 1
  }
}