Pith Number

pith:GFUKKXY2

pith:2021:GFUKKXY2IFNAT72LDAPYDAZ3FO

not attested not anchored not stored refs pending

Recovery of regular ridge functions on the ball

Konstantin Ryutin, Tatyana Zaitseva, Yuri Malykhin

arxiv:2102.13203 v2 · 2021-02-25 · math.FA · 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{GFUKKXY2IFNAT72LDAPYDAZ3FO}

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	2026-07-05T03:43:24.848403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3168a55f1a415a09ff4b181f81833b2b91bd3f586a65f860534dcc0bc5db0aec

Aliases

arxiv: 2102.13203 · arxiv_version: 2102.13203v2 · doi: 10.48550/arxiv.2102.13203 · pith_short_12: GFUKKXY2IFNA · pith_short_16: GFUKKXY2IFNAT72L · pith_short_8: GFUKKXY2

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/GFUKKXY2IFNAT72LDAPYDAZ3FO \
  | 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: 3168a55f1a415a09ff4b181f81833b2b91bd3f586a65f860534dcc0bc5db0aec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9cea5a0dc27f1a93b8391832044c0398ad3c5f1e1d26e4d3592f34fc9021a13",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2021-02-25T22:30:06Z",
    "title_canon_sha256": "548233d8b6ae1257d2667a86002ad8f532642441faa0b3b4f6513983a67b356b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.13203",
    "kind": "arxiv",
    "version": 2
  }
}