Pith Number

pith:T2EZJEO5

pith:2019:T2EZJEO5DUZT4EXFBCDH2ZBLP7

not attested not anchored not stored refs pending

Deflation for semismooth equations

Matteo Croci, Patrick E. Farrell, Thomas M. Surowiec

arxiv:1904.13299 v1 · 2019-04-30 · math.OC · cs.NA · 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{T2EZJEO5DUZT4EXFBCDH2ZBLP7}

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	2026-06-04T20:14:28.151474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e899491dd1d333e12e508867d642b7fd8c0496d25ad390416d52ff814be514f

Aliases

arxiv: 1904.13299 · arxiv_version: 1904.13299v1 · doi: 10.48550/arxiv.1904.13299 · pith_short_12: T2EZJEO5DUZT · pith_short_16: T2EZJEO5DUZT4EXF · pith_short_8: T2EZJEO5

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/T2EZJEO5DUZT4EXFBCDH2ZBLP7 \
  | 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: 9e899491dd1d333e12e508867d642b7fd8c0496d25ad390416d52ff814be514f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f1a19e8fdee20929cbd4c0cc833bc5d3a492b8f9cbe4b96a0bcfac3bf75ca58",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-04-30T15:10:53Z",
    "title_canon_sha256": "b5cdd907a23d8ff4b475d4d9be98618e10598e1a29d90a84d912fd4013863dc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.13299",
    "kind": "arxiv",
    "version": 1
  }
}