Pith Number

pith:VM7GYHDT

pith:2018:VM7GYHDTZPHALY35NASDUYMMUH

not attested not anchored not stored refs pending

Format Abstraction for Sparse Tensor Algebra Compilers

Fredrik Kjolstad, Saman Amarasinghe, Stephen Chou

arxiv:1804.10112 v2 · 2018-04-23 · cs.MS · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VM7GYHDTZPHALY35NASDUYMMUH}

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	2026-05-18T00:01:09.471950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab3e6c1c73cbce05e37d68243a618ca1e5e9e3d8bb7f7e836d70f7bfe8ccb4f4

Aliases

arxiv: 1804.10112 · arxiv_version: 1804.10112v2 · doi: 10.48550/arxiv.1804.10112 · pith_short_12: VM7GYHDTZPHA · pith_short_16: VM7GYHDTZPHALY35 · pith_short_8: VM7GYHDT

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/VM7GYHDTZPHALY35NASDUYMMUH \
  | 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: ab3e6c1c73cbce05e37d68243a618ca1e5e9e3d8bb7f7e836d70f7bfe8ccb4f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c797bdc8dda565fbfbc22fc47790a2e3ceb72d17b6b02b178005c330721643b",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2018-04-23T20:57:59Z",
    "title_canon_sha256": "5617b1c3a7c79ab1a9d938184d1e1f5b4876f856a66ea79aaef1f0d7833ce8a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.10112",
    "kind": "arxiv",
    "version": 2
  }
}