Pith Number

pith:AMJQGU7B

pith:2019:AMJQGU7BLQBWJRPWVIYGUKV32U

not attested not anchored not stored refs pending

Two constructions of asymptotically optimal codebooks via the trace functions

Ming Chen, Wei Lu, Xia Wu, Xiwang Cao

arxiv:1905.01815 v1 · 2019-05-06 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AMJQGU7BLQBWJRPWVIYGUKV32U}

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	2026-05-17T23:46:57.361717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03130353e15c0364c5f6aa306a2abbd51dee75045493c02876f5ce2fd2190ce5

Aliases

arxiv: 1905.01815 · arxiv_version: 1905.01815v1 · doi: 10.48550/arxiv.1905.01815 · pith_short_12: AMJQGU7BLQBW · pith_short_16: AMJQGU7BLQBWJRPW · pith_short_8: AMJQGU7B

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/AMJQGU7BLQBWJRPWVIYGUKV32U \
  | 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: 03130353e15c0364c5f6aa306a2abbd51dee75045493c02876f5ce2fd2190ce5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aabd747ddc8422773ed3de490590039d12aecc19e7c474d6b8dc796ecae90a6a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-05-06T03:44:19Z",
    "title_canon_sha256": "94be1b583fe987bd664d16856d4e1bedf26c9ec580d64cdbae1d2170737e9223"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.01815",
    "kind": "arxiv",
    "version": 1
  }
}