Pith Number

pith:AGFOL6CI

pith:2017:AGFOL6CIAKZDKPCHOEGRSFFNU7

not attested not anchored not stored refs pending

Hierarchical matrix arithmetic with accumulated updates

Steffen B\"orm

arxiv:1703.09085 v3 · 2017-03-27 · math.NA · cs.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{AGFOL6CIAKZDKPCHOEGRSFFNU7}

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	2026-05-17T23:43:33.519451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

018ae5f84802b2353c47710d1914ada7c3ee5fa6f379380b554b9f60d0a7398d

Aliases

arxiv: 1703.09085 · arxiv_version: 1703.09085v3 · doi: 10.48550/arxiv.1703.09085 · pith_short_12: AGFOL6CIAKZD · pith_short_16: AGFOL6CIAKZDKPCH · pith_short_8: AGFOL6CI

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/AGFOL6CIAKZDKPCHOEGRSFFNU7 \
  | 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: 018ae5f84802b2353c47710d1914ada7c3ee5fa6f379380b554b9f60d0a7398d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25c90b5b46ac03fca19fd804bec1ce8c77a82d0d9099e5fc985522c02413a807",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-03-27T14:00:24Z",
    "title_canon_sha256": "869e7b0516cf7471e8ae49f2a5ac501b9b1b9b98d2ac4ced6ff5d47091fe4325"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09085",
    "kind": "arxiv",
    "version": 3
  }
}