Pith Number

pith:IV3IO7ZU

pith:2019:IV3IO7ZUV3YB2HWRY4AXPQXZWT

not attested not anchored not stored refs pending

Combined prefactored compact schemes for first- and second-order derivatives: conceptual derivation

Adrian Sescu

arxiv:1902.04454 v1 · 2019-02-12 · 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{IV3IO7ZUV3YB2HWRY4AXPQXZWT}

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	2026-05-17T23:54:12.231264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4576877f34aef01d1ed1c70177c2f9b4e95f66dd2e9291b61b97e36aa2afcd90

Aliases

arxiv: 1902.04454 · arxiv_version: 1902.04454v1 · doi: 10.48550/arxiv.1902.04454 · pith_short_12: IV3IO7ZUV3YB · pith_short_16: IV3IO7ZUV3YB2HWR · pith_short_8: IV3IO7ZU

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/IV3IO7ZUV3YB2HWRY4AXPQXZWT \
  | 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: 4576877f34aef01d1ed1c70177c2f9b4e95f66dd2e9291b61b97e36aa2afcd90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4d7f36e5532cf2460093eeae9c2cffe72faa5ad1ad3bc465fb09f22c826bc39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-12T15:53:39Z",
    "title_canon_sha256": "9d0ae2c504ffb832137a2ca916cb61d89edbbae8aefa52ef3544127eecebbfa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04454",
    "kind": "arxiv",
    "version": 1
  }
}