Pith Number

pith:4PYQ52AW

pith:2006:4PYQ52AWGC7IZRRRFRHDTMD3XW

not attested not anchored not stored refs pending

On finite-difference approximations for normalized Bellman equations

David \v{S}i\v{s}ka, Istv\'an Gy\"ongy

arxiv:math/0610855 v4 · 2006-10-27 · math.OC · 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{4PYQ52AWGC7IZRRRFRHDTMD3XW}

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	2026-05-18T02:31:02.704374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3f10ee81630be8cc6312c4e39b07bbdbc3c57027c0e3e20739b06cc945c693d

Aliases

arxiv: math/0610855 · arxiv_version: math/0610855v4 · doi: 10.48550/arxiv.math/0610855 · pith_short_12: 4PYQ52AWGC7I · pith_short_16: 4PYQ52AWGC7IZRRR · pith_short_8: 4PYQ52AW

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/4PYQ52AWGC7IZRRRFRHDTMD3XW \
  | 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: e3f10ee81630be8cc6312c4e39b07bbdbc3c57027c0e3e20739b06cc945c693d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3fec9837232e6b643160a9dffa8167eb2763d11bcb54f1b02b2b78ce8945f6f",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2006-10-27T16:07:48Z",
    "title_canon_sha256": "3c2fde7349fa449d9a0c2837f7fee0acd17f75988645fd737266cbd88c8c8640"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0610855",
    "kind": "arxiv",
    "version": 4
  }
}