Pith Number

pith:6Z3UCPEM

pith:2018:6Z3UCPEMUEM5QE23BXPK5AHOES

not attested not anchored not stored refs pending

Projected Newton method for a system of Tikhonov-Morozov equations

Nick Schenkels, Wim Vanroose

arxiv:1809.01627 v1 · 2018-09-05 · 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{6Z3UCPEMUEM5QE23BXPK5AHOES}

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	2026-05-18T00:06:27.028432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f677413c8ca119d8135b0ddeae80ee24860e33e40b76105ab8621164ed116c52

Aliases

arxiv: 1809.01627 · arxiv_version: 1809.01627v1 · doi: 10.48550/arxiv.1809.01627 · pith_short_12: 6Z3UCPEMUEM5 · pith_short_16: 6Z3UCPEMUEM5QE23 · pith_short_8: 6Z3UCPEM

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/6Z3UCPEMUEM5QE23BXPK5AHOES \
  | 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: f677413c8ca119d8135b0ddeae80ee24860e33e40b76105ab8621164ed116c52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "637523d1803e18dcbbc2bfd1be33f3cdea7a6b70df1a1b5ebbd9dd1740bbf65c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-09-05T17:10:51Z",
    "title_canon_sha256": "aa86c1ecc9bddeb30959852c9304ed34e560ab72622cfd9ba0fcac9974271d11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01627",
    "kind": "arxiv",
    "version": 1
  }
}